GDTP (Y14.5) - Geometric Dimensioning and Tolerancing Professional Certification

Geometric Dimensioning and tolerancing (GD&T) principles expressed in ASME’s widely applied Y14.5 Standard. Those principles form an essential element of the design language essential for the product manufacturing lifecycle.  For top design engineers worldwide, ASME’s Y14.5 Standard is the authoritative guideline for the design language of Geometric Dimensioning and Tolerancing (GD&T). 

As an engineer, you know that manufacturing success hinges on clear communication. This is where GD&T comes in - the essential shared language that ensures your designs are manufactured as intended. Advance your GD&T knowledge to design with confidence and manufacture with necessary precision to achieve a competitive edge. Whether you're working across disciplines, stages of production, or global plants, proper application of GD&T techniques can make all the difference across the lifecycle: from tooling, production to QC & final inspection. Make design precision a priority, experience the benefits of advanced GD&T firsthand. 

Certification is currently based on either the 2009 or 2018 revisions of the ASME Y14.5 Dimensioning and Tolerancing Standard, its appendices, and the application of its principles and practices.

Technologist Level Certification indicates that the individual has demonstrated competencies in: 

1. Understanding the rules, definitions, principles, and meanings of the symbols and modifiers of GD&T as applied to engineering drawings and related documentation. 
2. Understanding the functions and relationships of part features and geometric controls. 
3. Performing calculations associated with GD&T derived from the drawing and related documentation. 
4. Understanding that the application of GD&T has implications for manufacturing, quality control, and verification processes associated with engineering drawings and related documentation. 
5. Applying the principles of GD&T to the establishment of functional gaging activities. 

Senior Level Certification indicates that the individual has demonstrated competencies in: 

1. Understanding the meaning of the symbols, modifiers, and relationships of GD&T as applied to engineering drawings and related documentation. 
2. Making the proper selection with consideration for the function and relationship of part features and of geometric controls, to document the product design intent. 
3. Performing calculations associated with GD&T to determine geometric requirements. 
4. Applying the appropriate geometric control symbols, modifiers, and datum references to the engineering drawings and related documentation. 
5.  Applying the principles of GD&T to the operations of manufacturing, quality control, and verification processes associated with engineering drawings and related documentation. 
6. Applying the principles of GD&T to the establishment of functional gaging activities.

It is helpful to know the following policies:

• As ASME-PC Connect is an email centric system, it is imperative that you keep ASME informed of any change to the email address you use to access your record. Failure to do so will exclude you from accessing your account and you will not receive maintenance emails regarding your certification. (Please refer to the sign-in screen of ASME-PC Connect for information regarding changing your email address.)
• Need to keep ASME updated with 'primary email' address at all times.
• ASME maintains a zero-tolerance policy for an expired certificate.
• Applicants need to apply using their legally recognized and substantiable name per official documents. Should your legal forms of identity not conform to what you entered, you must immediately contact ASME to have your name format corrected to match the identification documents.
• ASME uses an on-line, real time certification validation process. Certificate holders have access to digital images of their respective certification(s) as well as the real-time verification of their certification.

​WORK-FLOW AND REFUND POLICY:

1. Purchase examination: Order activated with corresponding 'welcome' email. If you do not create an examination account in ASME-PC Connect, applicant is entitled to a 100% refund of purchase amount back to source of payment. Applicants are required to complete and submit an application for ASME review within one year of the purchase date of the exam. Failure to do so will result in the application being closed and refund of unused funds.​
2. Creating an application: If you have signed into ASME-PC Connect and created an examination application, the applicant will have one year (365 days) to submit an application for ASME review. Failure to submit this application will have the application expunged from the system and forfeiture of all submitted funds. 
3. Examination processing: Upon acceptance into the examination program, candidate will be assigned a six months (180 day) eligibility period. The candidate must execute the exam by the end of this period or the ability to take the exam will incur a reinstatement fee. Should the candidate request another attempt at executing an exam, they are required to submit a reinstatement fee. This will provide another six month (180 day) eligibility. Applicants are limited in the number of reinstatements. Should an application extend beyond the one year anniversary date of acceptance, the application will be closed with forfeiture of all submitted funds. Failure to adhere to the rules regarding the scheduling, rescheduling or of a nature that the exam was not executed due to a failure to follow policy, the candidate will be required to submit a reinstatement fee to unlock their record and be allowed to execute the exam. 
4. Recertification process:Certificants are notified of the expiration date on their certification. Starting at six months (180 days), ASME will provide you with a complimentary reminder to complete the recertification process prior to the expiration. Certificants are reminded that ASME has a zero-tolerance policy regarding certificates which have expired, regardless of a completed yet unsubmitted recertification application for ASME review.

In addition to purchasing directly on this page.  You may also use one of the following methods:

1. Purchase Order – A purchase order (PO) may be used to submit four or more applicants. The PO must be from a Canadian or U.S. client and be for 4 or more applicants. If you are submitting 10 or more applicants, there is a 10% discount applied. Please follow the instructions on the form to submit your applicants and purchase order. You will need to provide each applicant's mailing address and email address. 

2. Pay by Phone: ASME Customer Care, 8:30 a.m.-5:00 p.m. EDT: 1.800.843.2763 (U.S./Canada)  1.646.616.3100 (outside U.S./Canada) Please be prepared to provide your:  Contact information (name, title, organization, mailing address, email, phone). Credit card information, Preferred GDTP certification:  *Be sure to include exam level (Technologist or Senior) and year.

3. ​Check/Money Order – Follow the instructions on the form to submit one or more applicants using a check or money order. You will need each applicant’s physical mailing address, as well as their email address. 

You will receive a payment confirmation email shortly after submitting the fee.

Note: Before you purchase your certification online and create an account, review the three options below to see which option applies to you: 

1.  You may already have an account: If you’ve ever completed an ASME certification, been on an ASME Committee, taken ASME courses or attended workshops, chances are you’re already in our system, even if this is your first time seeing this screen. Please use the Forgot Password option before creating a new account. 
2.  You are unsure whether you already have an account: Please email: customercare@asme.org to confirm your account details and get your username and password or call: 1.800.843.2763 (U.S./Canada, toll free); 001.843.2763 (Mexico, toll free); 1.646.616.3100 (outside North America) 
3.  This is your first time using any ASME system: If so, please create a new account per the sign-on screen. 

ASME GDTP Pricing Structure

Please refer to the ASME-PC Connect GDTP User’s Guide for in-depth guidance on submitting an online application. Please note that there is a one year time limit to complete and submit an application. Failure to do so within the year will entitle the applicant to a partial refund upon request. 

All information supplied on this application is subject to verification. Certification may be revoked by ASME for reasons of falsifying or providing inaccurate information during the certification process. 

Email: csg@asme.org or gdtp@asme.org

Download the ASME Geometric Dimensioning and Tolerancing Professional Certification Applicant Information Handbook  

Visit: go.asme.org/gdtp  

ASME Study Guide for Certification of Geometric Dimensioning and Tolerancing Professionals 

 

Once your application has been accepted, you will receive an email with instructions on how to schedule your exam at a conveniently located Prometric Testing Center. There is a time limit of 180 days to schedule the exam. Failure to do so will result in forfeiture of all funds. Candidates may request and pay for an additional 180 days if there is no scheduled appointment with Prometric and it is requested prior the 180th day.  

Should a candidate not adhere to the rules outlined in their acceptance letter with respect to cancelling/rescheduling an appointment at a Prometric Test Center, they will be assessed a ‘reinstatement fee’ at the current rate. This will provide a new eligibility cycle on the date the reinstatement fee was processed. 

Y14.5 Dimensioning and Tolerancing Standard

ASME Geometric Dimensioning and Tolerancing Course Collection

Geometric Dimensioning and Tolerancing Handbook: Applications, Analysis & Measurement

Geometric Dimensioning and Tolerancing (per ASME Y14.5-2018)

Study Guide for Certification of Geometric Dimensioning and Tolerancing Professionals (GDTP)
 

The requirements have been updated to align with current industry practices and credentialing standards. A 3-year experience requirement for the Senior exam reflects modern pathways to competency, maintains appropriate differentiation between Technologist and Senior credentials, and ensures consistent, fair, and defensible eligibility criteria across the program.

Industry standards evolve over time to incorporate new methodologies, technologies, and clarifications.

ASME prioritizes certifications aligned with the most current standard to ensure relevance and consistency in competency validation. Focusing on current offerings supports candidates in developing skills that are widely applicable in today’s engineering and manufacturing environments. 

The Technologist exam has no prerequisites.

This certification indicates that the individual has demonstrated proficiency in reading and interpreting engineering drawings prepared in accordance with the ASME Y14.5‑2018 Standard. 

Technologist Level examination consists of:

• 150 scored multiple choice questions
• maximum duration of 4 hours 
• Is closed book
• Evaluates the applicant’s knowledge, selection, and application of geometric dimensioning and tolerancing (GD&T) principles and practices in accordance with the ASME Y14.5 2018 Standard.

The topics covered on the examination, the approximate distribution of questions by topic, and the minimum passing requirements are described below: 

• candidates must achieve an overall score of at least 74%
• A minimum score of 50% in each section below.

ASME Y14.5-2018 Technologist Examination by Sections:

• 25% on Sections 3 through 6 (Definitions, Rules, Tolerancing, Symbology)
• 20% on Section 7 (Datum Reference Frames)
• 5% on Section 8 (Form) 
• 5% on Section 9 (Orientation) 
• 25% on Section 10 (Position) 
• 15% on Section 11 (Profile) 
• 5% on Section 12 (Runout)

Reference the Candidate Handbook for more detailed information.

The Y14.5-2009 Technologist Level examination is a maximum of four hours in duration consisting of 150 questions. The examination is structured as a closed book, multiple choice, written examination, evaluating the applicant’s knowledge of GD&T principles and practices in accordance with ASME Y14.5-2009 Standard. 

The topics and approximate distribution of questions is as follows: 

1. 10% on Scope 
2. 10% on General Tolerancing 
3. 5% on Symbology 
4. 20% on Datum Referencing 
5. 5% on Form 
6. 5% on Orientation 
7. 25% on Location 
8. 15% on Profile 
9. 5% on Runout 

A candidate must achieve at least a 78% grade overall and at least 50% in each of the above categories. 

Requirements: 
In order to be certified as a Technologist GDTP, applicants must successfully pass the Technologist GDTP Examination. There is no experience requirement. 

Reference the Candidate Handbook for more detailed information.

 

Certification indicates that the individual has demonstrated competencies in the understanding of knowledge, selection and application of the dimensioning and tolerancing principles, concepts and practices.

The ASME Y14.5 2018 Senior Level examination consists of:

• 150 scored multiple choice questions
• maximum duration of 6 hours 
• Is closed book
• Evaluates the applicant’s knowledge, selection, and application of geometric dimensioning and tolerancing (GD&T) principles and practices in accordance with the ASME Y14.5 2018 Standard.

The topics covered on the examination, the approximate distribution of questions by topic, and the minimum passing requirements are described below: 

• candidates must achieve an overall score of at least 74% 
• A minimum score of 50% in each section below.

ASME Y14.5-2018 Senior Examination by Sections:

• 10% on Sections 3 through 6 (Definitions, Rules, Tolerancing, Symbology)
• 30% on Section 7 (Datum Reference Frames)
• 5% on Section 8 (Form) 
• 5% on Section 9 (Orientation) 
• 25% on Section 10 (Position) 
• 20% on Section 11 (Profile) 
• 5% on Section 12 (Runout)

Reference the Candidate Handbook for more detailed information.

The Y14.5-2009 Senior Level examination is a maximum of six hours in duration consisting of 150 questions. The examination is structured as a closed book, multiple choice, written examination. 

The Senior Level examination will emphasize knowledge, selection and application of the dimensioning and tolerancing principles, concepts and practices. 

The topics and approximate distribution of questions will be as follows: 

1. 10% on Dimensioning, and Symbology 
2. 30% on Datum Referencing 
3. 5% on Form 
4. 5% on Orientation 
5. 25% on Location 
6. 20% on Profile 
7. 5% on Runout 

A candidate must achieve at least a 78% grade overall and at least 50% in each of the above categories. 
 

Requirements:

• Applicants must have five years of documented experience in the field of GD&T in the recognized use of the system in both application and understanding 
• Successfully pass the Senior GDTP Examination. 

Note: It is not required to be a certified GDTP Technologist to qualify for Senior Level certification. ASME membership is not an exam requirement.

Reference the Candidate Handbook for more detailed information.

Notification of the results of the examination, including the percentage of correct answers within each part, will be emailed to the applicant within 30 days after the exam. Grades will not be given over the phone. 

In the event that you do not pass the examination, you may take the exam two times in a period of six months. NOTE: After a second unsuccessful attempt, candidates must wait 180 days before they are eligible to retake the exam. A retake fee applies once the waiting period has passed.

In line with our commitment to fairness, consistency, and exam integrity, we must apply these limits equally to all candidates. You may be eligible to reapply for the certification once your current eligibility period has ended. 

The certificates will have an expiration date of three (3) years from the date of issuance. Certificate holders are listed on the ASME-PC Connect website. 

Successful completion of an examination aligned to a specific version of the ASME Y14.5 Standard does not grant certification to any other version of the Standard.  The certification is version-specific, examination results apply only to the corresponding version of the ASME Y14.5 Standard under which the examination was administered.

If you need to retake your exam, the following retest fees apply: 
 

Certification / Fee Type	Price (USD)
GDTP 2018 Technologist Retest	$225
GDTP 2018 Senior Retest	$325
GDTP 2009 Technologist Retest	$310
GDTP 2009 Senior Retest	$413
GDTP 1994 Technologist Retest	$310
GDTP 1994 Senior Retest	$413

Retesting is a great opportunity to build on your previous experience and successfully achieve certification.
 

We strongly encourage you to take this time to deepen your knowledge and skills before your next attempt. While use of these resources is not mandatory and does not guarantee a passing result, they have been identified as potentially helpful for candidates preparing for the exam: 

 

1. ASME Training Course 
   Fundamentals of Geometric Dimensioning and Tolerancing (GD&T) in Design Through Manufacturing (for ASME Y14.5 GDTP Technologist Level) – Virtual Classroom 
     

2. ASME Study Guide (Book) 
   Study Guide: Certification of Geometric Dimensioning & Tolerancing Professionals 
   Book details and ordering information: 
    

These resources can support your understanding of the body of knowledge assessed by the exam and help you target areas for improvement. 

Certification may be attained without examination upon verification of involvement with GD&T for at least 24 months. ASME will notify certificate holders at least 6 months prior to their expiration date listed on their certificate that they may renew. They will be instructed to log into ASME-PC Connect, pay the recertification fee and subsequently document and have verified their GD&T experience. 

GD&T Certification Maintenance 

The GDTP certification maintenance process is intended to verify continued competence through ongoing, level-appropriate professional engagement rather than replicating the initial certification examination. Acceptable experience shall demonstrate substantive involvement in interpreting, applying, verifying, approving, or technically directing ASME Y14.5 requirements in engineering drawings, digital product definitions, inspection and verification documentation, or related technical outputs. 

ASME defines continuing competence as the demonstration of specified knowledge, skills, or abilities throughout an individual’s professional career and expects certification programs to employ maintenance requirements and verification mechanisms that are relevant to the certification construct and appropriate to the level of certification held. 

Accordingly, acceptable GD&T experience for certification maintenance shall reflect sustained professional activity aligned with the defined scope of practice for Technologist and Senior GDTP certificants and provide a sufficient basis for determining continued, active engagement in the application of ASME Y14.5 principles, terminology, and verification practices. 

Acceptable GD&T Experience Examples for Certification Maintenance 

The examples below illustrate types of GD&T-related experience that may support verification of continued competence during the certification maintenance period. These examples are intended to reflect active engagement with ASME Y14.5 concepts, terminology, and requirements, including interpretation and application of feature control frames, datum reference frames, tolerance zones, and related verification principles, rather than passive exposure to drawings or generalized quality activity. The examples are provided for guidance only and are not a complete list. ASME reviews each submission on its own merits, and matching an example does not guarantee approval. Experience should be appropriate to the level of certification held and may be documented through experience summaries, redacted work samples, employer verification, or comparable supporting evidence.

Experience Category	Technologist GDTP – Acceptable Examples	Senior GDTP – Acceptable Examples
GD&T Drawing and Product Definition Interaction	• Interpreting engineering drawings or digital product definitions that apply ASME Y14.5 requirements  • Reviewing feature control frames, datum feature references, modifiers, and related dimensions to determine requirements for manufacturing, inspection, or acceptance  • Interpreting datum reference frames and tolerance zones to understand design intent and verification requirements	• Creating, technically directing, revising, or approving drawings or digital product definitions with GD&T controls  • Selecting datum features, datum reference frames, geometric tolerances, modifiers, and tolerance zones to communicate functional requirements  • Establishing or approving datum structures and feature control frame requirements to ensure proper definition of feature relationships
GD&T Requirement Interpretation & Application	• Interpreting geometric characteristic symbols, modifiers, datum references, and feature control frame requirements on existing product definition  • Identifying incorrect, incomplete, ambiguous, or edition-inconsistent GD&T usage  • Interpreting tolerance zone definitions and relationships based on geometric tolerances and datum references	• Selecting and applying geometric tolerances, datum references, modifiers, and boundary concepts based on functional requirements  • Resolving GD&T application or interpretation issues involving material condition, material boundary concepts, datum reference structure, tolerance zones, profile, position, runout, or feature relationships  • Applying and evaluating material boundary concepts, including maximum material boundary (MMB) and regardless of material boundary (RMB), in relation to datum reference frames, tolerance zones, and functional requirements  • Applying and evaluating virtual condition and related boundary concepts for functional gaging and verification
Manufacturing & Quality Support	• Applying existing GD&T requirements to support manufacturing, setup, inspection, or acceptance decisions  • Applying GD&T requirements during part acceptance, nonconformance evaluation, gage use, or review of acceptance criteria	• Applying GD&T principles, including datum reference structure, tolerance zones, and boundary concepts, to establish or approve manufacturing strategy, inspection planning, or functional gaging decisions  • Making technical decisions involving material condition and material boundary concepts, including maximum material boundary (MMB) and regardless of material boundary (RMB), virtual condition, and verification approach selection
Inspection & Verification Activities	• Reviewing inspection reports, CMM outputs, or measurement results against stated GD&T requirements  • Supporting CMM programming or inspection planning based on feature control frames, datum reference frames, tolerance zones, and modifier requirements  • Interpreting acceptance criteria based on tolerance zones and datum reference frames	• Defining, validating, or approving inspection and verification approaches for stated GD&T requirements  • Performing or reviewing tolerance analysis, boundary analysis, functional gaging logic, datum simulation strategy, or verification methodology  • Defining or approving verification approaches based on tolerance zone evaluation, datum simulation, and boundary conditions
Professional Responsibility & Authority	• Participating in design, manufacturing, or inspection reviews involving GD&T interpretation  • Interpreting, applying, or supporting existing ASME Y14.5 requirements within an assigned role	• Providing technical direction or approval authority for GD&T application  • Mentoring others on proper ASME Y14.5 use, terminology, and interpretation  • Resolving interpretation issues or disputes related to GD&T requirements
Documentation for Verification	• Experience summary describing how ASME Y14.5 requirements were interpreted, applied, or supported  • Redacted drawings, inspection plans, reports, or analysis summaries accompanied by a clear explanation of the applicant’s role  • Employer or supervisor attestation	• Experience summary describing GD&T selection, approval, resolution, or technical direction responsibilities  • Redacted design outputs, verification plans, or analysis summaries accompanied by a clear explanation of the applicant’s role and authority  • Employer confirmation of GD&T authority or technical responsibility

Reviewer Note: Experience documentation shall be evaluated holistically and in relation to the certification level held, the nature of the work performed, and the applicant’s role and degree of responsibility. Reviewers shall not apply these examples as a checklist, require evidence of every activity listed, or treat the maintenance review as a re-examination of initial certification competence. Experience shall be evaluated relative to the ASME Y14.5 edition invoked by the work product or governing organizational practice, recognizing that terminology, symbols, and permitted practices differ between editions. Evaluation should confirm that the submitted experience demonstrates correct application of ASME Y14.5 concepts, including feature control frames, datum reference frames, tolerance zones, material condition, material boundary principles, and verification methods, consistent with the cited standard edition. 
 

Important Notes 

• Experience is reviewed to confirm continued engagement with GD&T and is not intended to reassess initial certification competence 

• Experience must be evaluated relative to the certification level held 

• Submitted materials may be redacted or anonymized to protect confidentiality 

• Employer or supervisor verification may be submitted in lieu of work samples 

Where applicable, documentation should reference specific feature control frames, datum reference frames, tolerance zones, or related GD&T elements 

• Documentation should clearly identify:  

  • The applicable ASME Y14.5 edition (when known) 
  • The GD&T activity performed 
  • The applicant’s role in the activity 
  • Whether the work involved interpretation, application, verification, approval, or technical direction 
  • Where applicable, documentation should reference specific feature control frames, datum reference frames, tolerance zones, or related GD&T elements 

• The examples provided are illustrative and non-exhaustive; comparable experience may be considered if it demonstrates continued, level-appropriate competence 

• Experience reflecting only passive exposure to drawings or GD&T without demonstrated interpretation, application, or decision-making should not be considered sufficient

Your certification is valid for three (3) years. The recertification/renewal process will be managed through ASME-PC Connect, allowing you to continue to enjoy the benefits of being certified. Certificate holders who meet the recertification requirements will receive instructions on how to maintain their certification without having to retest. Please refer to the ASME-PC Connect User’s Guide for in-depth guidance on submitting an online application for recertification.

Please contact ASME’s Customer Care for questions: 1.800.843.2763 (U.S./Canada, toll free); 001.843.2763 (Mexico, toll free); 1.646.616.3100 (outside North America).

Recertification is a straightforward way to maintain your credential and demonstrate continued competency. The fee is the same across all GDTP versions and levels: 
 

Certification / Fee Type	Price (USD)
GDTP 2018 Technologist Recertification	$125
GDTP 2018 Senior Recertification	$125
GDTP 2009 Technologist Recertification	$125
GDTP 2009 Senior Recertification	$125
GDTP 1994 Technologist Recertification	$125
GDTP 1994 Senior Recertification	$125

In certain situations, additional fees may apply to support your testing timeline: 

Written Examination Considerations
 

Certification / Fee Type	Price (USD)
Prometric Reinstatement Fee	$198
Prometric Examination Eligibility Extension Fee	$198

These options are available if you need to reinstate or extend your exam eligibility, helping you stay on track with your certification goals.

Please visit the Certificate Holder Search function on the ASME-PC Connect site. Following the on-screen prompts, please locate your record. You will note a ‘downward arrow’ towards the right of your record. Using this function, you will have the opportunity to print a current certificate. Please note the legal disclaimer towards the bottom of this FAQ as to its term of validity and its status. 

Where different versions of the ASME Y14.5 Standard are in use, certification in multiple versions may support broader applicability of competence.

Yes.  The requirements have been updated to align with current industry practices and credentialing standards. A 3-year experience requirement reflects modern pathways to competency, maintains appropriate differentiation between Technologist and Senior credentials, and ensures consistent, fair, and defensible eligibility criteria across the program.

Yes. The Y14.5-1994 examination remains available for candidates upon request.

If you are interested in registering for the exam or renewing your certification, please contact ASME Customer Care: 

• Phone (U.S./Canada): 1.800.843.2763 
• Phone (outside U.S./Canada): 1.646.616.3100 
• Email: csg@asme.org 
• Hours: 8:30 a.m. to 5:00 p.m. EDT 

ASME Customer Care can guide you through eligibility, registration, and renewal steps.
Reference the Candidate Handbook for more detailed information.

Yes. Professional experience applying the principles of geometric dimensioning and tolerancing (GD&T) using the ISO GPS system may be considered relevant experience for purposes of meeting the eligibility requirements for the Senior-level ASME GDTP examination. 

However, candidates should be aware that the ASME GDTP examinations are based on the requirements and practices contained in the ASME Y14.5 standard. While the ISO GPS system addresses the same general subject matter and shares many foundational GD&T concepts, there are important differences in terminology, symbology, rules, interpretation, and application between the two systems. 

Candidates whose professional experience has been primarily based on ISO GPS are encouraged to familiarize themselves with the ASME Y14.5 methodology and address any knowledge gaps prior to taking the examination. It is the candidate’s responsibility to ensure they are adequately prepared for an examination based specifically on the ASME Y14.5 standard. 

ASME Geometric Dimensioning and Tolerancing Professional (GDTP) certification program recognizes individuals who have demonstrated the required competence at the Technologist or Senior level. Individuals who meet these requirements are issued an ASME GDTP certificate. This policy governs the appropriate use of ASME GDTP credentials, symbols, and logos and is intended to protect the integrity and credibility of the GDTP certification program.

Individual Nature of Certification

ASME GDTP certification applies only to individuals. It does not apply to organizations, products, services, courses, or activities. ASME does not approve, certify, rate, or endorse any item, construction, service, or activity manufactured, designed, taught, published, or performed by a GDTP certificate holder.

Organizations may reference the certification of specific individuals, provided the reference clearly identifies the credential as individual‑based.

ASME has established two GDTP Symbols and Logos certification trademarks:

• GDTP Technologist Logo
• GDTP Senior Logo

These logos may be used only by current certificate holders, and only in an individual capacity, to indicate the named individual’s GDTP certification level.

Permitted Use

Certificate holders may reference their GDTP certification in professional materials such as business cards, resumes, biographies, email signatures, and professional profiles.

When referenced in organizational materials, certification must be attributed to the individual and described using language such as:

“The instructor, author, or employee is GDTP certified by ASME in accordance with the qualifications of ASME Y14.5.2–2018 at the Technologist or Senior level.”

GDTP logos may be displayed only where the presence of one or more certified individuals is clearly identified.

Prohibited Use

The following uses are strictly prohibited:

• Use of GDTP logos in any manner that is misleading or that implies certification of an organization, product, service, course, group, or activity rather than a specifically identified certified individual.

• Use of GDTP logos when no associated individual holds a current GDTP certificate at the referenced level, or when the certification status cannot be clearly attributed to an individual.

• Application of GDTP logos to products, product packaging, training materials, or review course materials, or in any context suggesting product or service conformity.

• Modification, alteration, or improper reproduction of GDTP logos.

• Any statement or representation implying that ASME approves, certifies, rates, endorses, or is otherwise responsible for any product, service, activity, or outcome, or that an individual or organization acts on behalf of ASME without authorization.

Use of ASME Name and Logo

The ASME corporate logo, defined as the cloverleaf containing the letters “ASME,” may be used only by ASME and may not be used by any other individual or organization.

Enforcement: Misuse of ASME GDTP symbols, logos, or credential references may result in corrective action, including withdrawal of authorization to use the certification marks.