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For example, let us suppose the metal whose weight is desired to be brass whose Gauge Point as given is 1.09. The operation just described and with the factors given in Table 11 give the weight per linear inch of the given area if the material were iron, and to obtain its weight in brass we multiply its weight thus found in iron by 1.09 the Gauge Point given for brass— the product being the desired weight in brass.
The unit of length has been assumed in this form of measurement as one inch instead of one foot as probably covering more cases of actual problems than the foot unit, although in the cases of Beams, Girders, built up Sections, etc., the foot unit would oftenest apply.
Wrt. Iron— | 1.00 | Copper— | 1.15 | |||
Cast Iron— | 0.93 | Brass— | 1.09 | |||
Cast Steel— | 1.02 | Lead— | 1.47 | |||
Steel Plates— | 1.04 | Zinc— | 0.92 |
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