Mike , I have a WRENCH like the one you have on photo site . So I`m told , it was used on the old gasoline hand pumps with glass tank on top to make up the suction and vent lines . Mine looks about in the same condition as yours . He also sent some images which I > posted at: <http://public.fotki.com/mikesloane/tools__equipment//>, > labeled "Howard1", "Howard2", Bo Hinch