TimeZone is all about wristwatches. Their Mechanical Watch FAQ answers many of the questions I’ve had about things like the number of jewels in a watch and why they’re there in the first place. The section on glow in the dark dials led me to this 1998 NY Times article on the horrible exposure of dial painters (mostly female, young as 15) to radium in the early 1900s. (via Memepool)