FIELD: geodetic and geophysical operations. SUBSTANCE: several interferometers are installed along range line. Each of them is anchored on tested object and is provided with unmaladjusted reflector oriented in certain way. Interferometer is fabricated in the form of plane-parallel plate. Reflector is manufactured in the form of reflecting mirror with outer coat. EFFECT: facilitated manufacture, improved functional stability. 2 cl, 5 dwg
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