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No specification found for this NSN.
A mechanical device having a revolvable horizontally mounted head(s) or spool(s) (gypsy head) around which one or more turns of rope must be taken for exerting pulling power. The device may also have a vertically mounted head(s) but must not contain a drum(s) on the periphery of which a rope, line or chain is secured. See also winch, drum (as modified).