Timetrax 185 Clock Timer Minerva® hands (timer / stopwatch) This pendulum measures 35 1/2"

This pendulum measures 35 1/2" in length

4mm for internal diameter

Generic Screw-On Crown to fit Breitling® CN-B36 black Skyland Avenger®

To fit Waltham 3/0 size

Timetrax 185 Clock Timer Minerva® hands (timer / stopwatch) This pendulum measures 35 1/2"Timetrax 185 Clock Timer this electric clock timer and amplifier measures the rate of mechanical clocks by sensing escapement action and mechanical sounds of the escapement. Use on carragiage clocks to 400 day and Atmos clocks. It reads vibrations per hour. Timetrax also features a digital balance mode that helps place a clock in beat and has a built in audio beat amplifier. *Batteries not included. Specifications are as follows: 4" wide x 7" high x