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Sparking at commutator.
Specific gravity, Table of.

heat, Table of .

volumes.
Speed, Cutting.

of emery wheels.
of gears, To calculate.
of grindstones..
of polishing wheels.
of pulleys, To calculate..

of twist drills..
Sphere, Formula for.
Spiral, Length of.
Square measure..

root...
Squares and cubes.
Standard pipe flanges.
Steam chest.

chest bolts.
chest covers..
Heating by exhaust.
port area..
Properties of saturated.
tables..

Velocity of, through ports.
Steel, Tempering of.
Stone, Weight of.
Storage batteries.
Strands in wire rope.
Strap, Eccentric and.

end of connecting-rod..
Strength of materials...
Stroke of engine.
Stuffingbox...
Surcharged walls, Pressure on..
Surface expansion, Coefficients of.

Measures of (not land).
Surveying..

with compass.

with transit.
Surveyor's measure.

square measure.
Switch.

Point or split.
Stub.

stub, To lay out.
Systems, Annunciator.

T.
Table, Long-ton..

Miscellaneous..

PAGE
259
10
18
25
176
176
142
176
176
142
177
117
118

2
103
106
215
219
220

221
.173, 174

219
29
25
219

6
10
263
212
226
224
150
216
228
305
19

5
.276-326

276
280

1

315
315
315
320
243

3
4

263

INDEX.

xvii

PAGE
Table of chemical elements..

16
of powers, roots, and reciprocals

110
Tables, Steam.

25
Wire...

247-251
Teeth of wheels.

228
Temperature of fusion.

18
of vaporization..

18
Tempering steel.

6
Tensile strength of materials

151
Tension of rope belting, Formula for.

210
Testing of cables (electrical)..

271
Threads, Cutting screw.

178
Proportions of screw.

22
Three-wire system, Edison.

253
Ton, Long..

3
Tools, Cutting speeds for machine.

176
cutting, Motors for.
Torque...

261
Tracks, Cross-over..

325
Trackwork..

309
Transit notes, How to keep.

291
surveying...

279
Trapezium and trapezoid, Formula for.

115
Triangles, Formulas for.

114
Triangulation.

283
Trigonometric functions, Directions for use of table of 68
functions, Table of.

74-78
Troy weight.

3
Tunnel sections.

306
Turnouts.

312
Type metals.

15
U.
Ultimate strength of materials..
Underwriters' line wire...

247
rules for incandescent wire.

245
Units, Electrical...

230
Universal joint coupling.

195
Useful tables.

1-92

V.
Valve diagram.

188
Valves, Safety.

173
Slide..

187
Vaporization, Latent heat of

18, 25
Temperature of..

18
Vapors, Weights of.

14
Velocity of steam through ports.

219
Vernier..

279
Voit...

230
Volume, Measures of.

5
Volumes, Specific..

25
2

151

PAGB

165
147
231
117

6
21
238
209
21
10
3

W.
Water, Testing of feed.

Flow of, in pipes..
Watt, The unit.
Wedge, Formula for.
Weight, Avoirdupois..

Measures of..
of bar iron, round and square.
of copper wire.
of manila rope.
of sheet lead.
of various substances..

Troy..
Weights and measures.

and measures, Metric system of.
Welding fluxes::
Wheatstone bridge.
Wheel and axle.
Wheels, Speed of emery.

Speed of polishing.
Wheelwork, Formulas for..
Width of belts, Formulas for..
Wire, copper, Sizes for circuit.

copper, Weight of..
gauges, Sizes of B. & S. and Birmingham.
rope,

Strands in.
tables...
Underwriters' line.
Wires, Equivalent areas of, B. & S. gauge.
Wiring, Bell....

Interior.
Work, Definition of.
Wristpin brasses...
W'rought-iron pipe, Sizes of.

24
270
136
176
176
136

140
.235-240

238
249
212

212
.247-251

247
248 :
241
235
139
224
24

rope, Steel.

THE MECHANICS '

HANDBOOK.

USEFUL TABLES.

WEIGHTS AND MEASURES.

..ft. .yd. .rd. .fur. mi.

.

LINEAR MEASURE. 12' inches (in.)

1 foot 3 feet

1 yard 5.5 yards

= l rod 40 rods

= 1 furlong 8 furlongs

= 1 mile in. ft.

yd.

rd. fur. mi.
36 =
3 =

1
198
16.5

5.5 1
7,920 660 220 40 = 1
63,360 5,280 1,760

320 ==

8 = 1

li. rd.

SURVEYOR'S MEASURE. 7.92 inches

= 1 link 25 links

== 1 rod.. 4 rods 100 links

1 chain
66 feet
80 chains

= 1 mile.
1 mi. = 80 ch. = 320 rd. = 8,000 li. 63,360 in.

}

.ch.

.mi. .sq. ft. sq. yd, sq. rd.

SQUARE MEASURE. 144 square inches (sq. in.).

1 square foot 9 square feet

= 1 square yard 304 square yards

= 1 square rod 160 square rods

= 1 acre

A. 640 acres

= 1 square mile A.

sq. yd. 1 640 102,400 3,097,600 27,878,400 = 4,014,489,600

...... sq. mi.

sq. mi.

sq. rd.

sq. ft.

sq. in.

sq. rd. sq.ch,

SURVEYOR'S SQUARE MEASURE, 625 square links (sq. li.) = 1 square rod 16 square rods

= 1 square chain 10 square chains.

= 1 acre

A. 640 acres

= 1 square mile 36 square miles (6 mi, square) = 1 township

.Tp. 1 sq. mi.

640 A. = 6,400 sq. ch. 102,400 sq. rd.

64,000,000 sq. li. The acre contains 4,840 sq. yd., or 43,560 sq. ft., and is equal to the area of a square measuring 208.71 ft. on a side.

sq. mi.

CUBIC MEASURE. 1,728 cubic inches (cu. in.)..... 1 cubic foot 27 cubic feet

1 cubic yard. 128 cubic feet

1 cord 243 cubic feet

1 perch 1 cu. yd.

27 cu. ft. 46,656 cu. in.

cu. ft. .cu. yd.

cd.

P.

MEASURE OF ANGLES OR ARCS.

60 seconds (") 60 minutes 90 degrees 360 degrees

1 cir.

1 minute
1 degree
1 rt. angle or quadrant

1 circle
21,600 1,296,000"

cir.

3600

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