gage glass (gajglas)

In steam-engines, a strong gla tube serving as an index to the condition of the boiler by exhibiting the height or agitation of the water in it. See steam - gage. gage-knife (gāj'nif), n. A knife to which a gage is fitted, serving to regulate the depth or size of the cut made. gage-ladder (gāj'ladèr), n. A square frame of timber used in excavating to lift the ends - of wheeling-planks; a horsing-block. E. H. Knight.