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 418
Fig. 9. -^O—<fOO 600 SOO /o66 /eOO f900 IbOO ToCQ/I.nPorPkinb. Ten hours per day, 310 days per year, 11,000 B.t.u., coalat $3.00. … eoe Joo ddo 300 /660 koo /aoo tibbo /god sxx)7bbo.i IMP oTP/ont Fig. 10. Ten hours per day, 310 days per year, $2.00. ,000 B.t.u., coal at 396 MECHANICAL AND ELECTRICAL COST DATA
