Which trade is it?
One definition, four trades. Pick the one it belongs to.
A crane, often working in pairs and usually made of steel, used to lower things over an edge of a long drop off, such as lowering a maintenance trapeze down a building or launching a lifeboat over the side of a ship.
Get the Word of the Day
One industrial term every day, with the trade it belongs to and why it is worth knowing. No advertising.