Movement 292
AnimatedOriginal 

292. Stud escapement, used in large clocks. One pallet, B, works in front of the wheel and the other at the back. The studs are arranged in the same manner, and rest alternately upon the front or back pallet. As the curve of the pallets is an arc described from F, this is a repose or dead-beat escapement.

免费欧洲美女牲交视频_免费人成在线观看网站_免费岛国片在线观看x片喷水