
The range of action of conventional clamps is significantly expanded, if the emphasis is extensible, as the wrench. It is done so. In an l-shaped bracket drilled and cut the hole for the clamping screw, and in its longest part — the holes for mounting the movable jaw. It is fixed with a pin or screw of corresponding diameter.
   
 V. DUDCHUK, S. kleschikha, Rivne region.
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