Hamad bin Turki Salami wrote:

I'm just curious about a component that's on a board
in a synthesizer I have. It looks like a pot and it's
hooked to a knob that turns through about 315 degrees.
However, it has 4 leads instead of three. I've done
some measurements on it and they're not consistent
with it being a pot. What would it likely be?

Leads or terminals ? You can get pots with centre taps making 4 terminals. It
might also be a rotary encoder although these normally turn continuously and
don't typically have 4 connections.

Graham