a surveying instrument used to measure vertical and horizontal angles
Origin of theodoliteModern Latin theodelitus: probably invented (c. 1571) by Leonard Digges, Eng mathematician
An optical instrument consisting of a small mounted telescope rotatable in horizontal and vertical planes, used to measure angles in surveying, meteorology, and navigation.
Origin of theodoliteProbably coined by Leonard Digges (1520–1559), English mathematician and surveyor, as the name of a device for measuring horizontal angles, perhaps from Greek thea, a viewing + a second element of unknown origin.
From New Latin theodolitus, of unknown origin.