Weishi No. 1000 Multifunction Timegrapher

Weishi No. 1000 electronic watch timegrapher with LCD display showing Rate, Amplitude, Beat Error and Parameters. Front controls: sig./value up-down buttons, start/pause (red), setting/sound. Rear panel has Microphone input and Power switch. Includes silver/black microphone pickup mounted on a U-shaped clamp stand for holding watch movements. Used by watchmakers to measure rate accuracy, amplitude and beat error. Patent No. ZL201430044196.5, Serial No. 503049. Good working condition, intact, microphone clamp and cable present.