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Blueprint Reading: Dimensions and Tolerances, Part 2

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Course Format
Advantage™  Advantage™
Product ID
Continuing Education Units (CEUs)
Training Time ?
36 to 72 minutes
Video Format
Standard Definition
Devices Supported
Browsers Supported
IE Desktop
Required Plugins
MasteryNet Player
Lesson Interactions
Quiz Questions
Interactive Producer
A Routsis
Original Content Producer
A. Routsis Associates
Course screen Course screen Course screen

Part 2 of Dimensions and Tolerances is part of the six part series designed to develop abilities needed to accurately locate and interpret dimensions on engineering drawings. All courses are based on ANSI standards and incorporate input from a broad industrial population.

In part 2, learners locate and interpret dimensions specified by chain, baseline, and direct dimensioning methods. They also learn to identify a datum feature and explain its purpose; explain how maximum material condition (MMC) and least material condition (LMC) apply to internal and external features; calculate allowance; and identify a surface finish specification.

Advantage™ This course is in the Advantage™ format, to read about Advantage™ features click here.

  • Install on any SCORM LMS
  • Rich multimedia presentation with interactions and quiz
  • Print certificate and wallet card
  • You have 60 days to complete the course

Anyone working with engineering drawings.

The course presents the following topical areas:
  • Dimensioning Methods: Chain
  • Dimensioning Methods: Baseline
  • Dimensioning Methods: Direct
  • Mating Part Features: Maximum Material Condition
  • Mating Part Features: Least Material Condition
  • Mating Part Features: Classes of Fit
  • Mating Part Features: Allowance
  • GD&T Feature Control Frame
  • Surface Finish Specifications
Intended Performance Outcomes
Upon successful completion of this course you will be better prepared to:
  • Recognize when chain dimensioning is used.
  • Recognize when baseline dimensioning is used.
  • Recognize when direct dimensioning is used.
  • Calculate MMC for mating part features.
  • Calculate LMC for mating part features.
  • Identify which class of fit is being dimensioned.
  • Calculate an allowance between two part features.
  • Identify the different components of a feature control frame.
  • Know how surface finish characteristics are specified.

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