Brian Law's woodenclocks- Clock 55 with a Pendulum Drive unit
Clock 55 again has a Pendulum Drive unit instead of a conventional weight to drive the clock mechanism. This is a refined version of the earlier clocks using this Drive unit making it easier for the clock builder to get the clock running continuously. It will run for 3 Months on a single AA battery and has an attainable accuracy of plus or minus a couple of minutes per day.