FIELD: measurement technology. SUBSTANCE: set to measure forces of surface friction includes immobile sections 1 of pipe-line, mobile section 2 suspended between them and rod attached to mobile section 2 resting against displacement transducer 6, hermetic chamber 7 installed coaxially to pipe-line and anchored on its immobile sections 1. Immobile sections 1 are provided with holes 8 which diameter is equal to 0.04-0.01 diameter of pipe-line. EFFECT: increased precision of measurements. 2 dwg
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