Blueprint Reading: Dimensions and Tolerances, Part 2

Course Information
Audience
Anyone working with engineering drawings.
Training Time
36 to 72 minutes
Delivery Formats
Web, CD-ROM, LAN, WebCD
Product Code
artsbpr5
Interactive Producer
A Routsis
Original Content Producer
A. Routsis Associates
Language(s)
en
Feature meter

Overview

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.

Topics

The course presents interactive instruction covering 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

Performance Objectives

This course will measure mastery on each of the following performance objectives:

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.