Theodolites of 3T series are easy and reliable in use.
The compensator at the vertical circle allows one to make rapid and accurate measurements of vertical angles. The instrument can be used for geometrical levelling (by a horizontal beam). The theodolites can be used for measuring distances with the help of stadia transit and for determination of magnetic azimuths by means of a compass. Unlike foreign analogues the theodolites allow one to carry out work at lower temperatures. All theodolites of 3T series may be equipped with light range finders of different models produced by FSUE PA UOMZ. The device may be fitted with a geodetic tripod of ShR-160 model.