spectacle gage (spektaklgaj)

A device used in fitting spectacles to determine the proper distance between the gla es. spectacle-gla (spek'ta-kl-glas), n. 1. Gla suited for making spectacles; optical gla .2. A lens of the kind or form used in spectacles. -3t. A field-gla ; a telescope. Ao. 1678 he added a spectacle - gla to the shadow-vane of the le er arch of the Sea-quadrant. Aubrey, Lives (Edmund Halley). A spectacle-maker (spek'ta-kl-maker), n. maker of spectacles; one who makes spectacles, eye-gla es, and similar instruments. The Spectacle-makers' Company of London was incorporated in 1630.