Properties:

A thin metal strip, of various cross-sectional shapes, having graduations on one end and a breather on the opposite end. It is designed to be inserted into an engine, pump, or compressor crankcase, transmission, gearcase, or the like, to determine the level of the liquid. For items with a cap, see gage rod-cap, liquid level and items without a cap or breather, see gage rod, liquid level. For items designed to measure the liquid level of bulk petroleum tanks, see gage stick, petroleum.