Quote Originally Posted by Matthew Wagg View Post
How on Earth would such a thing work? The old meters used Selenium cells which turned light into an electrical signal which then registers on the meter. I don't see where winding it up would come into it.
You wind up the clockwork. The clockwork train turns a tiny regulated generator which supplies 2.7 volts to your LunaPro. That's about as close as you can come to a clockwork lightmeter.