Channeler Edge tool with blade sticking out of brass attachment. One knob adjusts the metal blade and the other adjusts brass attachment. Inscription on left side of metal tip. Wooden handle has leather strip for hanging tool. Would cut slit in edge of leather while trimming edge. Probably used in harness making.
Channeler. Metal | brass | wood | leather. L: 7 Inches, DIAM: 1.125 Inches. On left side of metal tip: "C.S.O. & Co"