My favorite aspect of visiting aviation museums as a kid was an opportunity to sit in decommissioned aircraft and work the controls. It turns out that’s still fun as an adult.
UC Berkeley’s student machine shop has a truly fascinating collection of old machines that are still fantastically useful. (I’ve posted on it before.) This particular photograph is of a lathe’s controls–both those for moving the tool bit relative to the metal as well as those for the automatic feeds.
When everything I work with in the laser lab is computer-controlled, it’s refreshing to work with a machine that works entirely from a clever design of gears and cogs. There’s a solidity and strength in a device that is completely independent of interference from microprocessors.