Theodolite

thē-od′ō-līt, n. an instrument used in land-surveying for the measurement of angles horizontal and vertical, being neither more nor le than an altitude and azimuth instrument, proportioned and constructed so as to be conveniently portable.— adj. Theodolit′ic . [Ety. unknown; Gr. the as thai , to see + hodos , way + litos , smooth; the as thai + dolichos , long, .]