n. See Scimiter. [ 1913 Webster ]
n. [ Focus + -meter. ] (Photog.) An assisting instrument for focusing an object in or before a camera. Knight. [ 1913 Webster ]
n. [ L. lux, lucis, light + -meter. ] an instrument for measuring the intensity of light; a photometer. [ 1913 Webster ]
n. [ L. velox, -ocis, rapid + -meter. ] An apparatus for measuring speed, as of machinery or vessels, but especially of projectiles. [ 1913 Webster ]