Geometric Dimensioning and Tolerancing to ASME Y14.5 – Level 2

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  • Level 2 (ASME Y14.5 version)

What is it?

An intensive two-day course in Geometric Dimensioning & Tolerancing, which follows on from, and builds upon, the Level 1 course.

  • Learn how to define more advanced datum structures.
  • Find out how to use the Least Material Condition modifier.
  • Discover how to use the Maximum Material Condition modifier with datum references (datum shift).

The course covers some of the more advanced concepts of Geometric Dimensioning & Tolerancing and its application and interpretation. It is suitable for anyone who has completed the Level 1 course.


2 days

Who is it for?

Mechanical, design and production engineers.

Delegates are required to have completed the Level 1 course.

What does it cover?

  • Review of Level 1 material
    • Guidelines for working with Geometric Tolerances
    • The six-step method
    • Ideal and non-ideal features
  • Datums
    • situation features
    • datums based on single datum features
    • common datums based on aligned and non-aligned datum features
    • datums based on groups of datum features
    • datums based on complex surfaces
    • identifying situation features on drawings
    • datums based on contacting features
    • moving datum targets
  • Controlling individual degrees of freedom
  • Maximum Material Requirement
    • Review of Maximum Material Condition modifier applied to tolerance values
      • bonus Tolerance
      • Virtual Condition boundaries
      • zero tolerances at MMC
  • Least Material Requirement
    • bonus Tolerance
    • Virtual Condition boundaries
  • Maximum Material Requirement applied to datums
    • ‘datum shift’
    • datums based on Virtual Condition boundaries
  • Projected tolerance zones
  • Tolerances applied to non-rigid components
  • Multiple and Composite tolerances applied to groups of features
    • FRTZF and PLTZF
    • different ways of controlling patterns or groups of features
    • Multiple and Composite tolerances applied to surfaces