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Anniversary clock manufactured by S. Haller & Söhne Co. Kundo reverts here. For other use, see Kundo (disambiguation). A torsion pendulum clock, more commonly known as an anniversary clock or 400-day clock, is a mechanical clock which keeps time with a mechanism called a torsion pendulum.
Kieninger & Obergfell Uhrenfabrik (KUNDO trademark), Sankt Georgen (1918 - recent) Kienzle Uhren, Schwenningen - Schlenker and Keinzle until c1897 (1883-1996) Franz Ketterer; Lenzkirch Clock Co (Aktiengessellschaft fur Ukrenfabrikation) (1851-1929) factory operated by Junghans 1929-1932; Mauthe Clock Company (c1870 - 1976)
A torsion pendulum clock requiring only annual winding is sometimes called a "400-Day clock" or "anniversary clock", sometimes given as a wedding gift. Torsion pendulums are also used in "perpetual" clocks which do not need winding, as their mainspring is kept wound by changes in atmospheric temperature and pressure with a bellows arrangement.
Built to withstand rough play, many survived the decades, but collectors prize the ones in excellent condition with minimal rust and original packaging. 12. 1963 Original Easy-Bake Oven winches ...
The first use of pendulums in clocks around 1656 suddenly increased the accuracy of the verge clock from hours a day to minutes a day. Most clocks were rebuilt with their foliots replaced by pendulums, [ 34 ] [ 35 ] to the extent that it is difficult to find original verge and foliot clocks intact today.
22. Texans WR Stefon Diggs. Houston oddly restructured Diggs' deal right after trading for him, allowing him to become a free agent this year. Unfortunately for Diggs, he tore his ACL in Week 8.
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