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The perpetual calendar is not just a timepiece
10" x 9" x 12"
and more prosaically
kit builders
The Hermle cable-driven movement (W0058) with its refined rollers and minimalist weights guarantees the highest precision
UGears Dynamometer high arch The perpetual calendar is notUGears Dynamometer is a dynamic and unique model. It operates using the pneumatic principle by making use of air to wow the user. This UGears model operates by transforming air pressure into motion. When you blow onto the top gear a system of lever spins the wheel of the arrow. One interesting thing about this model is that it can be used as a game between your family and your visitors. You blow on top of the gear and the arrow spins and comes to rest
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