Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics (1892)
Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 916
foundation of the watch, are cut out by punches and dies, made specially for each design. In the main punch there are a number of small punches inserted, and so accurately placed that the exact position of the ^ holes required to be drilled are marked Fig i ^Pmioii cutting engine upon the plate.… … 886 WATCHES AND CLOCKS.
Mechanical engineering
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