DEVICE TESTING REALIZATION OF KEY CONDITION OF GEODETIC LEVELS

摘要

FIELD: measurement technology. SUBSTANCE: invention refers to level certification systems and is intended to test key condition of geodetic level under laboratory conditions. Proposed device is composed of solid base placed on foundation where autocollimator, vessel with liquid and tested level are mounted. Pentaprism overlapping half of entrance pupil of autocollimator is installed on mounting seat of objective. Level bubble of tested level is brought to center. Autocollimation image of mark is matched with mark of autocollimator proper by means of lifting screws with observation through eye-piece. Image of sighting mark of tested level should match this mark. Angular value of misalignment is measured with the help of scales of autocollimator. EFFECT: enhanced functional reliability of device. 3 cl, 1 dwg