Functional Gaging and Measurement 2-day Workshop     


I.D.# ETY145Printable Description
Duration: 2 Days
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Providing you have a basic understanding of geometric dimensioning and tolerancing fundamentals, this course teaches an introduction to functional gaging design and how to verify part dimensional requirements using functional gages and other measurement methods. Utilizing the expertise of world-renowned GD&T expert Alex Krulikowski, this course offers an explanation of metrology, the roles of the metrologist and inspector, measurement uncertainty, inspection tools, functional gages, inspection planning and reporting, and simulating datums. Newly acquired learning is reinforced throughout the class with numerous practice problems. The scope of the workshop does not include measurement systems analysis or sampling strategies. For example, the workshop will discuss how to locate a part for inspection on a CMM, but it will not cover how many parts should be inspected to meet AQL levels. Each attendee receives a robust collection of learning resources including:

  • Functional Gaging and Measurement Workshop exercise workbook
  • Class handouts
  • ETI’s Digital Design Dictionary software ($79 value)
  • 30-day access to "Engineering Drawing Requirements"based on ASME Y14.100-2004 and ASME Y14.24-1999, (a $51 value) to practice and reinforce what was learned in the classroom
Thousands of students have learned GD&T through Alex Krulikowski’s textbooks, self-study courses, computer based training, and online learning center. Students who attend courses like this one walk away with more than knowledge. They gain on-the-job skills because the learning materials are performance-based.

Learning Objectives
By attending this class, you will be able to:

  • Describe the functions of inspection in an organization
  • Define what measurement uncertainty is.
  • Explain the basic operating principles, strengths, and weaknesses of the three major categories of inspection tools
  • List the types, uses, and tolerance methods for attribute gages
  • Explain attribute gage design fundamentals
  • Develop a measurement / inspection plan
  • Describe the purpose and content of an inspection report
  • Inspect and report size dimensions
  • Describe the basic concepts of datums related to inspection
  • Understand how to simulate datums for inspection
  • Verify flatness, straightness, circularity, cylindricity, orientation, position, runout, profile of a surface, and profile of a line tolerance requirements

Who Should Attend
This workshop is a valuable tool for individuals who inspect parts, create inspection plans, or approve inspection methods. Typical attendees include CMM operators, inspectors, gage designers, manufacturing engineers, technicians, supplier quality engineers.

Please be aware that this is not an introductory course. In order to understand the course content, you should have:

  • Completed 16 hours of formalized classroom training in GD&T
  • Experience interpreting or applying GD&T in an industrial setting
  • Have a working knowledge of the ASME Y14.5-2009 Standard
A certificate from the GD&T Trainer: Fundamentals 2009 or ETI’s Fundamentals of GD&T course is acceptable.

Topical Outline
Inspection in an Organization

  • Quality; the purpose and contents of a quality manual
  • Metrology and the roles of a metrologist
  • Importance and types of inspection, roles of inspector
Introduction to Measurement Uncertainty
  • Terms, importance, and major contributors
  • Using calipers for size measurements
  • Type A, type B, combined, and expanded uncertainties
  • Measurement uncertainty standards and major contributors
  • Decision rule, requirements, and factors that affect the choice of a decision rule
  • Guard band, simple acceptance, and simple rejection
  • Pros and cons of measurement uncertainty decision rules
  • Uncertainty calculator software
Three Major Categories of Inspection Equipment
  • Three categories, types, and pros and cons of inspection tools
  • Attribute and variables gages and data, operating principles
  • Common sources of attribute and variables gage errors
  • Operating principles of algorithmic measurement
  • Common sources of CMM errors
Attribute Gaging Concepts
  • Supporting Y14.5 concepts, common types, uses
  • Basic concept of functional gages
  • Options for gaging tolerance policies
  • Y14.43 recommendations and cost effects
  • The five gagemakers' tolerance classes
Attribute Gaging Design Fundamentals
  • Design constraints of functional gages
  • Considerations for workpiece distortion during gaging
  • In-process, final acceptance, and referee gages
  • Calculating gage pin size using absolute, tolerant, and optimistic tolerancing policies
  • Gage tolerance accumulation
  • How RMB datum references affect gage design
Benefits of RMB Datum Feature Simulation
  • Permitted departure from MMC and LMC principles of a gage design
  • Measurement / Inspection Plan
  • Dimensional measurement plan (DMP) purposes, contents, and importance
  • Eight inputs to a DMP
  • Classification of dimensional characteristics
  • Seven steps to creating a DMP
Inspection Reporting
  • Inspection reports, requirements, standards for reporting
  • Common methods for indicating inspection numbers
  • Mark up a drawing to number the dimensions for inspection
  • Non-conformance report and contents
Inspecting and Reporting Size Dimensions
  • Y14.5 requirements for a feature of size
  • Relationship between Rule #1 and a size dimension
  • Inspecting MMC size limits
  • Minimum CMM probe points
  • Rule #1 MMC boundary, actual local size inspection
  • Reporting MMC & LMC size inspection results
Datums Related to Inspection
  • Y14.5 requirements
  • Effects of datum sequence on inspection
  • Y14.5.1 candidate datum set concept
Simulating Datums for Inspection
  • Simulate datum planes using a fixture, datum reference frame with a functional fixture
  • Effects of datum reference frame simulation with a fixture on inspection
  • Simulating datum planes and a datum reference frame using a CMM
  • Simulating a datum axis (RMB) on a functional fixture and using a CMM
  • Simulating a datum axis (MMB) on a fixture
  • How a functional gage accounts for datum shift
  • How a CMM simulates datum shift (MMB)
Verifying Flatness Tolerance Requirements
  • Y14.5 requirements
  • Applied to a surface: verification using variable and algorithmic measurement
  • At MMC: verification with attribute measurement
  • Dimensional measurement planning and inspection reporting
Verifying Straightness Tolerance Requirements
  • Y14.5 requirements
  • Applied to a surface using variable and algorithmic measurement
  • Applied to a feature of size at MMC with attribute and variable measurement
  • Dimensional measurement planning and inspection
Verifying Circularity and Cylindricity Tolerance Requirements
  • Circularity and cylindricity tolerance Y14.5 requirements
  • Circularity: inspecting using variable and algorithmic measurement
  • B89.3.1 circularity verification and filtering requirements
  • Cylindricity: verification using variable measurement and a CMM
  • Dimensional measurement planning, inspection
Verifying Orientation Tolerance Requirements
  • Y14.5 requirements for an angular dimension, perpendicularity tolerance applied to a surface and feature of size (RFS and MMC)
  • Angular tolerance verification and sources of uncertainty
  • Perpendicularity tolerance applied to a surface verification using variable and algorithmic measurement, sources of uncertainty
  • Perpendicularity tolerance of a feature of size MMC verification using attribute measurement, RFS verification using variable measurement, sources of uncertainty
  • Perpendicularity tolerance applied to a feature of size RFS & MMC verification using algorithmic measurement, sources of uncertainty
  • Perpendicularity tolerance: inspection planning and reporting
Verifying Position Tolerance Requirements
  • Y14.5 requirements for a position tolerance (RFS and MMC)
  • Position tolerance (MMC) verification using an attribute gage, sources of uncertainty
  • Position tolerance (RFS) verification using variable measurement, sources of uncertainty Applied at RFS & MMC using algorithmic measurement, sources of uncertainty
  • Inspection planning and reporting
Verifying Circular and Total Runout Tolerance Requirements
  • Y14.5 requirements
  • Applied to a diameter: verification using a variable and algorithmic measurement methods, sources of uncertainty
  • Inspection planning and reporting
Verifying Profile of a Surface and Profile of a Line Tolerance Requirements
  • Controlling parallelism when no symbol is shown
  • Y14.5 requirements of profile of a surface and line tolerances
  • Verification using an attribute, variable, and algorithmic measurement methods, sources of uncertainty
  • Inspection planning and reporting
Course summary, final learning assessment

All of ETI's instructors are industry professionals with years of experience applying GD&T on the job. ETI trainers have:

  • Expert knowledge of the Y14.5 Standard
  • Current or recent industrial experience using GD&T
  • At least five years of experience using GD&T
  • Experience and skill using ETI teaching materials
Our instructors use identical training materials and lesson plans, so you receive the same class presentation from every trainer.

Fees: $1250.00 ; SAE Members: $1000.00 - $1125.00

1.3 CEUs
You must complete all course contact hours and successfully pass the learning assessment to obtain CEUs.

For additional information, contact SAE Customer Service at 1-877-606-7323 (724/776-4970 outside the U.S. and Canada) or at

For a quote on bringing this course to your company site, fill out a Corporate Learning Solutions Request Form