Part 45

=Angle-Iron=, illus. 75

=Angle-Plate=, illus. 75

=Angular Perspective Drawing=, illus. 260, 265

=Apex=, def. 42

=Apex of an Angle=, def. 42

=Arc=, def. 42 Complement of an 99 Cosecant of an 99 Cotangent of an 99 Sine of an 99 Supplement of an 99 Tangent of an 99 Versed Sine of an 99

=Arc of Circle=, To find the center of an 90

=Arcs=, Drawing 146 Illus. 146

=Arrow-Heads=, how made 172, 176

=Axiom=, def. 83

=Axis=, Conjugate, def. 96 Of a Figure, def. 43 Of a Solid, def. 42 Transverse, def. 96

=Backlash in Gearing= 215

=Backward Projection= desc. 152, illus. 152-3

=Base=, def. 43 Of a Polygon, def. 47

=Beacon Light=, illus. 282

=Beam Compasses= desc. 124, illus. 124

=Bending Machine=, Hydraulic desc. 221, illus. 220-1

=Benjamin, Prof. Chas.=, “How and What to Study” 23

=Bevel-Gear=, desc. 201

=Bevel Mortise Wheel=, desc. 203

=Bevel Wheel= desc. 199, illus. 203

=Bisect=, def. 43

=Bisector=, def. 43

=Blackboard=, illus. and desc. 27

=Blackboard Drawing= 28

=Blue Printing= desc. 186, illus. 187 Test pieces 188

=Blue Prints=, Office rules for 196

=Black Process Copying= 188