478 



INDEX 



Table of, 



allowance for metal shrinkages, 

 384 



apothecaries' weight, 13 



atomic weights, 129 



avoirdupois weight, 12 



circular measure, 12 



colored lenses, 121 



cubic measure. 12 



dry measure, 13 



ductility, 5 



expansion of metals, 108 



factors of safety, 244 



general measure, 13 



infusibility, 5 



land measure, 12 



linear expansion of solids, 109 



liquid measure, 13 



long measure, 12 



malleability, 5 



metric equivalents, 15 



metric measurements, 14-16 



quantities, 13 



square measure, 12 



strength of materials, 241 



tenacity, 5 



time measure, 13 



troy weight, 12 



weight and sp. gr. of liquids, 81 



weight and sp. gr. of metals, 80 



weight of castings, 389 



weight of metals per cu. in., 243 

 Tape, steel, 9 

 Taps, 25^260 



determining size of, 259 



teeth of, 259 

 Telegraph, 220-223 



history of, 220 



Morse code, 223 



operation of, 221 



parts of, 220 

 Telephone, 213-219 



cables, 217 



construction work, 219 



distributing frames, 217 



history of, 213 



listening cam, 217 



making a connection, 214-217 



principles of, 213 



supervising lamps, 217 



Template, 398 

 Tenacity, 3 



table of, 5 

 Tension, 234, 235 

 Thermometers, 100-103 



Fahrenheit and Centigrade, 102 



manufacture of, 100 



temperatures in industry, 101 

 Thickness gauge, 437 

 Thread (See "Screw thread") 

 Thunder, 188 

 Time, unit of, 7 

 Tin, 445 

 Tools, 22 



lathe, 426 



machine shop, 421 

 Torsion, 234, 235 

 Toughness, 3 

 Tracing cloth, 230 

 Tracing paper, 231 

 Transformers, electric, 201 

 Transmission of power, 283-301 

 Traps, 464 

 Tuberculosis, 357 

 Tungsten steel, 407 

 Turbine, 



steam ,338 

 action of, 338 



water, 75 

 Twaddell hydrometer, 83 



Vacuum pan, 106 

 Valence, 131 

 Valves, 



air, 351 



of motor car, 363 



safety, 311 



construction of, 312 



steam, 332, 351 

 Ventilation, 354-358 



dust, 357 



exhaust, 355 



forced, 355 



methods of, 354 



noxious gases, 356 



object of, 354 



perspiration, 356 



tuberculosis, relation to, 357 



waste products, 356 



