Dry D r y Cleaning C l e a n i n g Pads P a d s and a n d Drafting D r a f t i n g
Powder 74
Protractor 75
French Curves 75
Templates 76
Drafting Media 76
Pencils 78
Scales 80
Architect’s Scale 81
Engineer’s Scale 82
Mechanical Drafter’s Scale 82
Metric Scale 82
Computer-Aided Drafting
Equipment 82
Inspecting, Maintaining, and Servicing
Drafting Tools 86
Working Safely 86
Creating an Ergonomic
Environment 86
Chapter
5
Drafting Techniques 91
Line Conventions 93
Construction Lines and
Guidelines 93
Border Lines 94
Object Lines 94
Hidden Lines 94
Cutting-Plane Lines 94
Centerlines 94
Dimension Lines 95
Extension Lines 95
Section Lines 95
Phantom Lines 95
Using a Scale 95
Using an Architect’s Scale 96
Using a Metric Scale 99
Making Measurements 99
Drawing Lines with Instruments 100
Drawing a Line Perpendicular to a
Given Line 102
Erasing E r a s i n g Errors E r r o r s 103 1 0 3
Using a Compass 104
Darkening g Lines 105
Attaching a Drawing Sheet to the
Board 107
Drafting Sheet Formats 108
Recommended Drawing Sheet
Formats 109
Chapter
6
Basic Geometric
Construction 121
Solving Basic Geometric
Problems 122
How to Bisect a Line 125
How to Bisect an Arc 125
How to Bisect an Angle 126
How to Transfer an Angle 126
How to Construct a Triangle from
Given Side Lengths 127
How to Construct an Equilateral
Triangle 127
How to Construct a Square from a
Given Diagonal Length 128
How to Construct a Square from a
Given Side 128
How to Construct a Regular
Pentagon 129
How to Construct a Regular
Hexagon 130
How to Draw an Octagon Using
a Circle 132
How to Draw an Octagon Using
a Square 132
How to Draw an Arc Tangent to Two
Straight Lines 133
How to Draw an Arc Tangent to
Two Lines That Form a Right
Angle 134
Contents Co Co nt nt en en ts ts 9 9 9