FIELD: testing equipment. SUBSTANCE: machine includes power frame 2, mobile cross-piece 4 with mechanism of its movement manufactured in the form of pair of screw transmissions. Nuts 6 of screw transmissions are positioned in mobile cross- piece 4 and are fastened to it by means of bolts. Machine has grippers 13 and 14 for sample anchored on power frame 2 and mobile cross-piece 4 and restoring members which number is equal to number of bolts. Each restoring member is installed between head of bolt and flange of nut of proper screw transmission. EFFECT: enhanced operational efficiency of mechanism. 4 dwg
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