NEW! GeoTol Pro 2020 Instructor GD&T Training PPT


  • New and improved program, loaded with graphics, instructional slides, and exercises to successfully teach a GD&T course.
  • Updated to the latest ASME Y14.5- 2018 Standards.
  • Coincides with the GeoTol Pro 2020 Workbook and Solutions Manual.
  • PowerPoint comes in USB format.


Our GeoTol Pro 2020 Instructor PowerPoint has all graphics from the accompanying GeoTol Pro 2020 workbook. The slides are split into the same 14 units as the workbook and the leader may create a custom lesson plan by hiding slides or adding your own content. Instructor notes are included at the bottom of each slide as a guide. A lot of the graphics are animated to show tolerance zones and inspection methods. Save yourself hundreds of hours of slide prep with this ready-made package. GD&T basics training ppt comes in USB format.

View Outline

Unit 1: Introduction to Geometric Dimensioning and Tolerancing

General overview, geometric characteristic symbols, rules, terms and definitions; Introduction to measurement principles, open set-up and Coordinate Measuring Machine (CMM)

Unit 2: Limits of Size

Rule #1; Features with & without size; MMC and LMC; Why plus/minus tolerancing is confusing; The need for geometric tolerancing

Unit 3: How the Geometric System Works

Introduction to the datum reference frame; Basic dimensions; Introduction to Position Tolerancing; Square vs Round tolerance zones; MMC, LMC, RFS modifiers; Introduction to Profile Tolerancing

Unit 4: The Datum Reference Frame

Datums, datum features, true geometric counterparts; Holes, slots, shafts, tabs, widths as datum features; Connection between the theory and physical; Datum feature precedence; Constraining the 6 degrees of freedom; True geometric counterpart requirements; Partial datum features

Unit 5: The Product Plans and Position Tolerancing Verification

Difference between the product drawing, manufacturing process plan, and dimensional measurement plan; The engineering specification versus the inspection method; Verifying position with MMC and RFS modifiers; Intro to paper gage

Unit 6: Orientation Tolerances

Perpendicularity, Parallelism, Angularity; Orientation as a refinement of location; Inspection reporting: The GD&T hierarchy of tolerances

Unit 7: Virtual Condition and Material Boundary Modifiers

Introduction to boundaries; Calculating virtual condition; Material boundary modifiers MMB, LMB, RMB; Calculating boundaries for datum features at MMB; Comparison between RMB and MMB; Simultaneous requirement; Calculating allowable datum feature shift; Paper gage calculations

Unit 8: Datum Targets and Irregular Surfaces

Angled datum features; Contoured datum features; Datum targets for sheet metal; Datum targets for plastic parts; Datum targets for castings and calculations to machining; Free state and restrained condition

Unit 9: Advanced Datum Reference Frames

Two datum features creating a single datum axis (common datum features, A-B); Coaxial holes as datum features; Hole patterns as datum features; Hole and slot design; Multiple datum reference frames;

Unit 10: Form Tolerances

Flatness, Straightness, Circularity, Cylindricity; Average diameter; Flatness per unit area

Unit 11: Advanced Profile Tolerances

Profile of a surface and line; Sample application drawings; Unequal and unilateral tolerances; verification principles and measurement data reporting; Composite profile; Coplanarity

Unit 12: Advanced Position Tolerances

Floating fastener formula; Fixed fastener formula; Position rectangular, conical, spherical tolerance zones; Position boundary; Continuous feature; Composite position tolerancing; Paper gage calculations

Unit 13: Coaxial and Runout Tolerances

Coaxial controls – Comparison of position, circular runout, total runout, concentricity, and profile

Unit 14: Practice drawings for GD&T application

Additional: Updates from ASME Y14.5-2009 (or 1994) to Y14.5-2018