Various clock parts assembled at a clock factory in United States.
Detroit Michigan USA Date:1920 Duration:4 min 47 sec Sound:NO SOUND
The intricate processes in the assembly of clock parts at a clock factory in United States. Marine balance wheel poising process. The operator removes small amount of metal to balance the balances. Workers use machines to drive hair springs on balance wheels. The balance staffs are sharpened to needle-like points. Pendulum in clock is assembled. Workers use jig saw to cut Mantel clock case. Workers glue wooden parts together. Workers attach faces to different kinds of clocks.
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