Useful Information
This text includes a reference section with
tables and charts containing helpful resources
for various types of drafting. This section
provides standard symbols and abbrevia-
tions, conversion tables, and screw thread
data. The information provided expands on
material covered in the book.
Glossary
A glossary of terms is included at the
end of the book. This section provides defini- fi
tions for many of the terms that appear in the
Drafting Vocabulary listings.
Color Use
Color is used throughout this text to high-
light important information and emphasize
safe practices. In cases where it is necessary
to emphasize a certain guideline or proce-
dure, red type is used. In addition, a color
coding system is used throughout the text to
identify different line types in drawings. For
example, dimension lines and extension lines
are printed in red. Chapter 3, Sketching, intro-
duces the Alphabet of Lines and the color
coding system used to identify lines in draw-
ings throughout this text.
ADDA Approved Publication
The content of this text is considered
a fundamental component to the design
drafting profession by the American Design
Drafting Association (ADDA). This publi-
cation covers topics and related material as
stated in the ADDA Curriculum Certification fi
Standards and the ADDA Professional
Certifi Examination Review Guides. fication
Although this publication is not conclusive
5
with respect to ADDA standards, it should
be considered a key reference tool in pursuit
of a professional career. For more informa-
tion about the ADDA Drafter Certifi fication
Examination and becoming a certifiedfi
drafter, go to www.adda.org.
About the Authors
John R. Walker is the author of 13 text-
books and has written many magazine
articles. Mr. Walker did his undergraduate
studies at Millersville University and has
an MS in Industrial Education from the
University of Maryland. He taught industrial
arts and vocational education for 32 years and
was Supervisor of Industrial Education for
5 years. Mr. Walker also worked as a machinist
for the US Air Force and as a drafter at the US
Army Aberdeen Proving Grounds.
Bernard D. “Bernie” Mathis has bache-
lor’s and master’s degrees in Industrial Arts
Education from the University of Northern
Colorado. He has taught mechanical
engineering drawing and architectural engi-
neering drawing for more than 30 years and
computer-aided drafting for more than 20
years. Prior to teaching drafting classes, Mr.
Mathis taught other industrial arts courses,
including woodworking, metalworking,
general crafts, leather crafts, lapidary, and
jewelry. Mr. Mathis has been sole proprietor
of his own drafting and design business for
25 years.
Contacting Goodheart-
Willcox
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