Geometric Dimensioning and Tolerancing

Geometric Dimensioning and Tolerancing (GD&T), is a system Allowance for a specific variation in the size and geometry of the part, in other words;

“Geometric Dimensioning and Tolerancing (GD&T) is a Set of rules, the structured language of symbols and definitions that allow the geometrical features of mechanical parts to be defined according to functional limits of imperfection.”

When do Tolerances become important

Assemblies: Parts will often not fit together if their dimensions do not fall within a certain range of values.
Interchangeability: If a replacement part is used, it must be a duplicate of the original part within certain limits of deviation. • The relationship between functionality and size or shape of an object varies from part to part.



Course Objectives

The course will help students and professionals understand the fundamentals of the GD&T language. It will guide them to comprehend Geometric Tolerancing and will assist them in becoming a certified GD&T associate


Role in the Industry

  • GD&T is an international language that provides precise specification and solitary interpretation to ensure correlation with global design models.

  • The datum features of GD & T provide extra tolerance.

  • It facilitates and simplifies gaging requirements.

  • It allows critical-to-function features of the mechanical parts.


Course highlight

CADD Centre has designed efficient modules to help you master the skills of geometric tolerancing. Here are the modules:

  • Differences between ASME and ISO Standards

  • Practical problem solving with real-world examples

  • Gauging Methods and Implications

  • Explanation and Implication of using GD&T symbols

  • Basic and Advanced GD&T Training

  • Comprehensive Study-Material


Job Prospect


Understanding tolerancing is crucial for manufacturing and building product. Therefore, GD&T is widely used in automotive, aerospace, electronics, commercial design, and manufacturing industry. So, if you intend to become a certified GD&T associate, the job opportunities for you are endless.

Request for Demo

Thanks! Message sent.