Counterweight
131float switch — Switches designed to isolate the electrical mechanism from the fuel tank for safety reasons. In a typical arrangement, upward movement of the float brings the armature closer to the magnet. At a predetermined fuel level, the float has sufficient… …
132Trebuchet — A siege engine in the form of a giant sling. that used the force of a counterweight to swing a projectile. ♦ War engine developed in the Middle Ages employing counterpoise. (Gies, Joseph and Francis. Life in a Medieval Castle, 227) ♦ Stone… …
