I am building a system which involves an increase in internal pressure via an air tank in order to extend a series of telescoping tubes, and a subsequent full release of pressure back to atmosphere. For safety reasons I need the release to happen due to the internal pressure reaching a certain...
I need a part for a project I'm working on, and I can't remember what it's called. Its an electric device that has a rod coming out on one side, and what it does is to pivot the rod in any direction (left, right, front, back). What is this thing called?