Worm and worm-wheel, [i, 28].
gears, [i, 62].
wheel, application of, [i, 30].
cutting teeth of, [i, 42].
enveloping teeth, [i, 28].
number of teeth in, [i, 29].
teeth, sliding motion of, [i, 28].
Worm to work with a square thread, [i, 29].
Wrench, adjustable, [i, 125].
for carriage bolts, [i, 125].
jaws, angle for, [i, 123].
monkey, [i, 125].
pin, [i, 126].
sockets, [i, 125].
various forms of, [i, 125].
Wrought iron, cutting speeds for, [i, 294].
Y
Yoke and guide-bars, [ii, 389].
Z
Zigzag riveted seams, [ii, 352].
Zinc gauge, the American sheet, [i, 387].
gauge, the Belgian sheet, [i, 387].