Pocket Watch Key for Winding Setting 5 Prong Even Sizes 2-10. Atmos clocks were and still are available in various models, sizes and shapes. Last week we conducted experiments to determine what variables affect the = period of the Clock Tower, Part 2. But what else can be done to make a time capsule for a school project. A while back.an embarrassingly long while back.the Meter Clock made an appearance.