Overview

GDTP stands for Geometric Dimensioning and Tolerancing Professional. It is a certification program offered by the American Society of Mechanical Engineers (ASME) that verifies an individual's competence in understanding and applying the principles of Geometric Dimensioning and Tolerancing (GD & T). GD & T is an essential language used for clear communication in manufacturing, ensuring that designs are manufactured as intended. ASME's Y14.5 Standard serves as the authoritative guideline for GD & T, and GDTP certification is based on either the 1994 or 2009 revisions of this standard, including its appendices and the application of its principles and practices. The certification program offers two levels of certification: Technologist and Senior. This section is based on ASME STD. In this section, topics covered Form, Profile, Orientation & Runout Tolerances including(a) form tolerance(1) straightness(2) flatness(3) circularity(4) cylindricity(b) orientation(1) angularity(2) parallelism(3) perpendicularity(c) profile(1) profile of a line(2) profile of a surface(d) runout(1) circular(2) totalspecifying orientation tolerancestangent planealternative practicetypes of modifiers(1) RFS(2) MMC(3) LMC(b) application(1) to the toleranced feature(2) to datums(3) when applicable(-a) to geometric tolerances(-b) to datumszero tolerance at MMC

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