Kienzle Electric Clock

This is a Kienzle electric clock. It has a synchronous motor that rotates at 50Hz using the 50Hz alternating current from the electricity mains supply. Since the frequency of the electric mains supply is very stable the clock is very accurate.

This clock was probably made in the 1960s by the well know clock manufacturer Kienzle. Kienzle was founded in 1822 and was the market leader in Germany in the sixties and seventies.

View of the back of the clock and the synchronous motor.

The clock will not start automatically after a power cut. The motor needs to be started manually by rotating a small dial at the correct speed (rotating it too quickly or slowly will not start the clock). This will probably not pass any modern health and safety standards - sticking your fingers into the back of a clock with a live 240 Volt electricity supply is not recommended.