7104-250
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Item no.: 165997273116
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7104-250 TOWER & LYON involute wrench. Patented in 1900 by Maschil Converse and marketed by Tower & Lyon in two sizes; this is the No. 1 (5-1/2" long). The term "Involute" refers to the shape of the curve of the jaw which supposedly assured that it could grip a nut of any size. Clearly marked. From the collection of Carl Bopp. Fine (BOP221) 80-150
