Posted by Howard Lewis on 06/02/2020 16:43:03:
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A little more seriously, could the curved jaws be intended to tension a wire? But, then; what is the part with the sliding part for?
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Howard
Has the ring of confidence, I guess the slider stops a wire, blade or pin slipping out when leverage is applied. It's too small to be for fencing wire, maybe it's for adjusting a band-saw or drive belt tension mechanism.