Rough surfaces, joints for, [ii, 138].

Round corners, filing out, [ii, 95].
files, using of, [ii, 95].
half-round, three-square files, [ii, 90].

Round-nosed chisels, [ii, 75].
tools, [i, 258].

Rudder frame, forging, [ii, 245].

Rule for finding horse-power, [ii, 418].
for locating pitch line of worm, [i, 29].
for finding the chord pitch, diametral pitch, and arc pitch, [i, 3].
for proportioning the steps of the driving cone, [i, 159], [161].

Russian sheet iron, gauge for, [i, 387].

Rust or caulked joints, [ii, 140].

S

Safety devices for planer heads, [i, 413].

Safety-valve, the inspection of, [ii, 368].
calculations for, [ii, 409].