Zeměměřické a astronomické přístroje používané na území ČR od 16. do konce 20. století
Centralnyj naučnoisledovatelskij institut geodezii, aerofotosjomky i kartografii made in small series special astronomical and geodetic instruments, including the triangulation theodolite OT 2; it is said to differ from the Wild T3 by the smaller diameter of the circles. The institute is best known for its polyconic projection from 1950, and currently uses the name Research Institute of Geodesy, Aerial Survey and Cartography, former CNIIGAiK, abroad.
The manufacturer's name on the device