
James D. Meadows
[per ASME
Y14.5M1994]
© 2006, Released February 2007
560 pages, illustrated / $109.00
ISBN: 0971440123
This is the most comprehensive GD&T textbook ever
written by a single author. Geometric Dimensioning and Tolerancing in 2007 has
the unprecedented ability to cover almost every facet of tolerancing. Unlike any before it, this GD&T textbook, and the
course based on it, can cover all the tolerancingrelated topics time allows.
Time is your only limiting factor in topics to be covered in a
workshop. . . but
the textbook has it all!
Although based on the rules found in the ASME Y14.5M1994 standard, it
also covers topics from other recently published standards by ASME
not found in older texts.
It includes stepbystep
procedures for dimensioning and tolerancing parts and assemblies. It
shows how to analyze the tolerances applied using both worst case
and statistical analysis. This book demonstrates the connection
between the application of functional geometric tolerances and its
effect on manufacturability and inspection, stressing optimal ways
to achieve a highquality product at the lowest possible cost to the
customer. 

Chapter
1–Geometric Dimensioning and Tolerancing
Symbology, Rules and Formulas; GD&T–an Introduction
Chapter 2
– Selecting a Tolerancing Approach
Datums and Datum Features; Steps in a Tolerancing Scheme; How to
Read a Feature Control Frame
Chapter 3
– True Geometric Counterparts
True Geometric Counterparts and Datum Feature Simulators; Fixtures,
Gages and Virtual Condition Boundaries
Chapter 4
– Boundaries and Material Condition symbols, MMC, LMC & RFS
Geometric Dimensioning and Tolerancing Overview; Material Condition
Symbols and the Boundaries they Generate
Chapter
5–Major Concepts of Geometric Dimensioning and Tolerancing
Converting from Plus and Minus to Geometric Tolerancing; Position;
Gaging; Flatness; Selecting Datum Features’ Perpendicularity; Mating
Part Tolerancing; Reading the Feature Control Frames as a Language;
Calculating Inner and Outer Boundaries [virtual condition, resultant
condition]; MMC vs. RFS vs. LMC [what they mean, when to use them,
boundaries they create]; Bonus Tolerancing Formulas; Allowed versus
Actual Deviation from True Position Calculations; A Difference
between Bonus Tolerance (growth) and Datum Shift (movement) of
Tolerance Zones
Chapter 6
– Form
Flatness; Straightness; Cylindricity; Circularity
Chapter 7
– Orientation
Overview; Parallelism; Perpendicularity; Angularity; Actual Mating
Envelopes; Orientation of Centerplanes
Chapter 8
– Profile
Profile of a Surface; Profile of a Line; Composite Profile; Two
Single Segment Profile; Coplanarity; Conicity
Chapter 9
– Runout
Circular Runout; Total Runout
Chapter 10
– Concentricity and Symmetry
Concentricity; Symmetry
Chapter 11
– Datums and Datum Features
More About Datums and Datum Features [How they are Selected; what
they Mean]; Specifying Degrees of Freedom; Establishing a Valid
Datum [Curved Surfaces as Datum Features, Datum Feature Patterns
referenced at MMC or RFS, Conical Datum Features
Chapter 12
– Centerplane Datums
Centerplane Datums—an Overview; Centerplane Datums on Mating Parts
Chapter 13
– Position with Fixed Fastener Assemblies and Projected Tolerance
Zones
Tolerancing Mating Parts in a Fixed Fastener Assembly for Position
Tolerancing; GO Gages; Reading Feature Control Frames; Projected
Tolerance Zones for Position Tolerances and How to Measure Them;
Referencing Datum Features at MMC/Datum Shift and What it Means
Chapter 14
– Position with Floating Fastener Assemblies
Tolerancing Mating Parts in a Floating Fastener Assembly for
Position Tolerancing; Selecting Datum Features; Two Single Segment
Position Tolerancing; Calculating Tolerances and Datum Shift
Chapter 15
– Direct vs. Indirect Relationships
Accumulation of Tolerances with Multiple Datum Reference Frames
Chapter 16
– Datum Targets
Flexible Parts; Equalizing Datums; Moveable Targets; Finding the
Datum Planes; Fixtures
Chapter 17
– Datum Feature Scheme Choices
Secondary and Tertiary Datum Features of Size; Datum Feature
Patterns and Profile; Simultaneous Gaging Requirements; Compound
Datum Features of Size
Chapter 18
– Flexible Parts
Temporary Datum Features; Restrained vs. Free State Inspection; Free
State Variation in Plastic, Rubber and Sheet Metal Parts; How to
Write a Restrained State Note; Fixturing Flexible Parts; Fixturing
Step Datum Targets; Tolerancing Automobile Panels
Chapter 19
– Positional Boundary Concepts
Elongated Holes; Tolerancing Hoses, Pipes and Tubes; Positional
Boundary Concept with Profile of a Surface; An Oddly Configured Hole
as a Datum Feature and How to Gage It; Measurement of Tolerance
Zones vs. Measurement of Positional Boundaries
Chapter 20
– Composite vs. Two Single Segment Positional Tolerancing
Simple and Complex Parts
Chapter 21
–
Why Use GD&T?; Floating Fastener Assemblies; Converting from Plus
and Minus Tolerancing to Composite Position Tolerancing;
Interpretation of Tolerance Zones; Minimum Wall Thickness
Calculations; Tolerance StackUp Analysis
Chapter 22
– Dimensioning and Tolerancing of Gages per the ASME Y14.432003
Dimensioning and Tolerancing Principles for Gages and Fixtures
standard –
GO Gages; NOGO Gages; Functional Gages; Absolute Gage Tolerancing;
Practical Absolute Gage Tolerancing; Optimistic Gage Tolerancing;
Tolerant Gage Tolerancing; Calculations that Determine the
Possibility of Accepting No Bad Parts, Rejecting No Good Parts or
Straddling the Line
Chapter 23
– Statistical Tolerancing and Its Specificity
How to be Specific in Calculating and Specifying Statistical
Requirements for Size and Geometric Tolerancing; Symbology for SPC
Formulas; Arithmetic Mean; Normal Distribution of Tolerance and the
Standard Deviation; Statistical Probability for Tolerance StackUp
Analysis for Geometric Tolerances
Chapter 24
 Tolerance StackUp Analysis
Fixed Fastener Assembly using Geometric Tolerances (a stepbystep
tutorial); Main Rules; Calculating Gaps; Working the Route;
Calculating Inner and Outer Boundary Means and their Tolerances;
Numbers Charts; Calculating Statistical Tolerances; Calculating
Tolerances likely to be Consumed by Manufacturing within Six Sigma;
The Root Sum Square Formula; The Bender Factor; Monte Carlo
Methodology; Reintegrating the Statistical Tolerance into the
Assembly; Glossary of Statistical Terms
Chapter 25
– Tolerance StackUp Analysis Explanation for a 5Part Rotating
Assembly
Determining Pertinent Factors; Excluding NonPertinent Geometric
Controls; Simplifying the Assembly Drawing; Graphing the Results;
Determining Minimum Gaps or Maximum; Interferences in the Assembly;
Wall Thickness Calculations; Choosing the Pertinent Tolerances and
Boundaries for Inclusion
Single Part Analysis; Tol. Stack with Profile Tolerance and Separate
Requirements; Accumulating Tolerance Error caused by Different Datum
Structures
Chapter
26– Tolerance StackUps Created During Manufacture of Products due
to Changing Setups
Machine and other Manufacturing Capabilities; Trigonometric Factors
Chapter 27
– GD&T as a Language
How to Read Feature Control Frames; Switching Datums Affects on
Gaging, Fixturing and Accumulating Tolerance Error; Different
Tolerancing Approaches; Datum Shift; PC Boards; Simultaneous vs.
Separate Requirements; Angular Orientation; Datums; Stationary vs.
Sliding Gaging Elements; Profile; Tolerance Zones and Pattern Shift;
Gear Drawings; Keyways; Bonus Tolerance; Sequential Tolerancing
Techniques using the Simultaneous Requirement Rule
Chapter 28
– Definitions
