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.
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 theā a viewing a second element of unknown origin
From New Latin theodolitus, of unknown origin.