n. [ Panto- + -meter: cf. F. pantomètre. ] An instrument for measuring angles for determining elevations, distances, etc. [ 1913 Webster ]
n. [ Photo- + -meter: cf. F. photomètre. ] (Physics) An instrument for measuring the intensity of light, or, more especially, for comparing the relative intensities of different lights, or their relative illuminating power. [ 1913 Webster ]