FIELD: surveying.
SUBSTANCE: invention relates to geodesy and, in particular, to benches for metrological verification and calibration of geodetic instruments, for example measuring systems "digital levelling unit + code ruler". Test bench comprises vertical guides for straight-line movement along them of carriage with digital level, coaxially with digital level on carriage there is reflector of laser interferometer measuring channel, carriage movement is electric driven at pre-set intervals of movement and number of measurement techniques. Measuring system code ruler is located separately on rigid base.
EFFECT: technical result is high accuracy of measurements.
1 cl, 1 dwg
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