Part 49

=Draughtsmen=, Useful Tables for 269-280

=Drawing=, Blackboard 28 Free hand 55 Linear Perspective 247 Parallel Perspective 260-1 Projection, desc. 148 Scale Perspective 257 Spur Gear, illus. 163, 211 Spur Wheel, desc. 162 Straight Line Figures desc. 65, illus. 66-7-8 Symbols 193 The Pitch Line 209 To Scale, desc. 126 Working, def. 51

=Drawing-Board= desc. 107, illus. 102, 106, 108 Expansion and Contraction of 108 How to Construct 107 Trestles, illus. 110, 111

=Drawing Instruments=, desc. 103 How to Select 104 Illus. 105 Outfit Recommended 104

=Drawing Materials=, desc. 103

=Drawing Office Rules= 191

=Drawing Paper=, desc. 132 Erasing Lines 140 Fixing of, illus. 102 Fixing on the Board 139 Pasting 184 “Points” 243 Patent Office Sizes 234 Sizes of 133

=Drawing Pencils=, desc. and illus. 118 How to Use 56

=Drawing Pen=, Filling with ink, illus. 130

=Drawing Pens=, desc. and illus. 129

=Drawing-Pins=, desc. 110

=Drawing Scales=, desc. 126

=Drawings=, Cleaning, desc. 169 Color and Finish, note 185 Dimensioning, desc. 176 Inking in, desc. 167 Lettering, desc. 171 Patent Office Rules for 233 Reproducing 186 Section-Lining, desc. 182 Shading desc. 180, illus. 180, 225 Size of, Office Rules 191 Tint and Color, desc. 184

=Drawing-Table=, desc. 111 Folding Legs, illus. 104

=Edge=, def. 45

=Elevation=, def. 45

=Elevation and Section=, Spur Wheel desc. 216, illus. 212

=Ellipse, An=, desc. 96, 118 To describe when length and breadth are given 96

=Envelopes=, Portfolio, desc. 142

=Equiangular Triangle=, def. 45

=Equilateral Triangle=, def. 50

=Erasing=, “Points” on 242

=Eye=, illus. and desc. 253 Effect of Light on 253

=Face=, def. 45

=Faced Surfaces=, Points, etc. 242

=Figures=, Drawing Straight-line 65 Numerals, examples of 173 Straight-line, illus. 66

=File Handle=, desc. and illus. 144

=Finger and Thumb Lines=, illus. 64