GD&T skills test: Pre-employment screening assessment to hire the best candidates

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Geometric dimensioning & tolerancing (GD&T) test

Summary of the Geometric dimensioning & tolerancing (GD&T) test

This GD&T test evaluates a candidate’s ability to understand drawings using the language of Geometric Dimensioning and Tolerancing. It evaluates the applicant’s knowledge of GD&T principles, concepts, and practices with the current ASME Y14.5 Standards.

Covered skills

  • Fundamentals & symbology

  • Datum referencing

  • Types of geometric tolerances

Use the Geometric dimensioning & tolerancing (GD&T) test to hire

Mechanical Engineers, Aerospace Engineers, Product Development Engineers, Manufacturing Engineers, Quality Inspectors, Electrical Engineers, Drafters, CAD Engineers, Mechanical Design Engineers.


Role specific skills


10 min





About the Geometric dimensioning & tolerancing (GD&T) test

The Geometric Dimensioning and Tolerancing (GD&T) language comprises symbols and standards that have been developed and are used by both engineers and manufacturers in order to describe a product and easily communicate among the different people and entities working together to bring something into production. This screening test follows the rules of GD&T as described in the American Society of Mechanical Engineers (ASME) Y14.5.

The test assesses candidates' knowledge and practical skills in using the principles, concepts, and best practices of GD&T. It evaluates candidates in the fundamentals and symbology of GD&T, datum referencing, and the different types of geometric tolerances. Different questions test the candidates' understanding of datums and features, GD&T symbols, the feature control frame, and material condition modifiers, among other things.

Candidates who perform well on this test have not only a strong GD&T knowledge but also the experience needed to apply that knowledge in practical work-related situations. These candidates can read designs correctly, interpret and communicate product needs accurately, and make decisions that move production forward.

The test is made by a subject-matter expert

Ali P.

An Aerospace engineer with a background in mechanical design, project management, and product development, Ali has 10 year of experience in aerospace structures and electric vehicle traction battery systems. His experience includes positions as a team lead at Jaguar Land Rover UK and the Turkish Aerospace Industries. In addition to his practical skills, Ali also an APM qualification in project management and as a team leader possesses strong people skills.

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TestGorilla’s tests are created by subject matter experts. We assess potential subject-matter experts based on their knowledge, ability, and reputation. Before being published, each test is peer-reviewed by another expert, then calibrated using hundreds of test takers with relevant experience in the subject. Our feedback mechanisms and unique algorithms allow our subject-matter experts to constantly improve their tests.

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