Calibrating the Witschi Watch Expert Timing Machine - Kosmos

In this video, I demonstrate how I calibrate my Witschi Watch Expert timing machine, as used for wrist- and pocket watches. The principle may also be useful for other horological timing machines like the Timegrapher. A precision 1pps reference signal is required. This can be obtained by using a GPS antenna or as shown here, using a signal generator app for a smart phone.

Видео Calibrating the Witschi Watch Expert Timing Machine - Kosmos канала Kosmos Horology