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An electromagnetically impulsed clock designed and built in France. These clocks were made in a great variety of styles. This one, with it's black tin box cover, is perhaps one of the more basic ones. It is designed to provide alternate polarity impulses to a slave clock every thirty seconds. However the wiring and connections will take some time to figure out. It is also designed to ring bells, for a school or factory, hence the brass disc with pin holes for every quarter hour.
Incredibly for such a large coil and a big heavy pendulum, this clock runs on a 1.5 volt "D" size battery. I had to fit a battery holder myself to this one. Also, I had to make a new switch contact as the original was missing. For this I used a short strip of copper spring, sanded down to provide good contact.
![](https://s2.save4k.ru/pic/1Ixt4V4Ofeg/mqdefault.jpg)