The Astronomical Observatory of the Illinois Watch Company in Springfield, Illinois.
Springfield Illinois USA Date:1922 Duration:2 min 12 sec Sound:NO SOUND
The intricate processes in the manufacture of watch parts at the Illinois Watch Company in Springfield, Illinois. View of the Astronomical Observatory. An old man operates 'Transit' device used to obtain accurate time by observing the passage of stars across the meridian. A 'Chronograph' machine is shown where the time obtained from the 'Transit' is compared with a sidereal clock. Telescope is used for general astronomical observation.
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