Construction cost keeping and management.2C 1900s Halbert Powers Gillette

gillette wrote, such appliance may not, in general, used in field, of immense value in office , particularly in shop, time clock. various forms of time clocks in common use, 2 types of illustrated. [the first] time card recorder, clock no made automatically stamp on card inserted in slot in clock workman time of arrival , of departure. cards made hold record covering pay period , need no attention timekeeper or clerk until termination of period. record of men s time can compiled readily 1 need not skilled mathematician or time clerk.

and furthermore, time clock system has been developed highly in shops keeping track of time used in completing job workmen, in way not in realm of field cost keeping, not entered here. form of time clock, shown in [the second image], has numbers of employees fixed on outer edge of disk or ring , record made employee shifts revolving arm , punches number upon entering office , leaving.