Ryan Provost emails:

I created a 24-hour analog clock this weekend. The clock also has a metric time dial (in 1/100 day), and a 40-hour dial (because there’s 400 gradients in a full circle, 100 grads per 1/4 circle). All I need is a clock mechanism kit, and a AA battery, and to set the time, and I’m gonna show it to everybody!

Looks like an nice design.