Handbook of mechanical and electrical cost data, giving shipping weights, capacities, outputs, and net prices of machines and apparatus, and detailed costs of installation, maintenance, depreciation and operation, together with many principles and data relating to engineering economics (1918)
Gillette, Halbert Powers, 1869-, Dana, Richard Turner, 1876-1928, joint author · New York, McGraw-Hill · leaf 922
r ^ 1 ^ i J 1 J^ <i d t- 1(1 ¥ T Enq-contr Y^AcP a o Q a ^yn-zoo a uys-ioo D qya^200 o ^h-ioo- a Q y„-too Q a a a a D o a L ?^4 0 … Enq-Contr PQr°«p a a D Z^\-I60 a Qj-e4iP a O a o D *;a □ a a D a ^. . yc 1 Fig-s. 4-5-6. Fig. 4. Trolley pole 42 ft. long. Fig. 5. Trolley pole 32 ft. long. Fig. 6. Trolley pole 30 ft. long. 899 900 MECHANICAL AND ELECTRICAL COST DATA and poles, we have been able to build concrete poles for about…
