href="@public@vhost@g@gutenberg@html@files@22298@[email protected]#fig82" class="pginternal" tag="{http://www.w3.org/1999/xhtml}a">76

88. Helico-volute spring 77 89. Double helico-volute 77 90. Helical spring 77 91. Single volute-helix 77 92. Flat spiral or convolute 77 93. Eccentric rod or strap 77 94. Anti dead-centers for lathes 77 95. Plain circle 95 96. Ring 96 97. Raised surface 96 98. Sphere 96 99. Depressed surface 96 100. Concave 97 101. Forms of cubical outlines 98 102. Forms of cubical outlines 98 103. Forms of cubical outlines 98 104. Forms of cubical outlines 98 105. Shading edges 99 106. Shading edges 99 107. Illustrating heavy lines 100 108. Illustrating heavy lines 100 109. Lines on plain surfaces 101

p. xii

110. Lines on plain surfaces 101 111. Illustrating degrees 102 112. Section lining 103 113. Drawing an ellipse 104 114. Perspective at angles 106 115. Perspective of cube 107 116. Perspective of cube 107 117. Perspective of cube 107 118. Protractor 108 119. Using the protractor