In 1954, Schatz introduced their 1000 Day Clock. The 1000 day clock is based on Schatz’s miniature 400 day clock movement (see Why 400 Day Clocks Run So Long). A larger mainspring, with about 2.5 times the amount of energy storage, is used, but the gears and escapement are similar. The pendulum makes 10 rotations per minute.
Here are videos of the 1000 day clock in operation, and a closeup view of the escapement:
Here are some photos of the 1000 day clock:
This clock is dated 8-57 (August 1957) on the movement and is part of my clock collection.
The 1000 day clock uses a 0.0024 inch thick Horolovar suspension spring, or complete suspension unit number 10B. See this post for information on ordering suspension springs or units.
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- A 1954 Schatz 1000 Day Clock | February 19, 2010