Offered is a handsome, C1870s, woodworkers, Adjustable Dado Plane. It is marked "W.COATES 57 BRIDGE STREET - MANCHESTER" and is most likely of English origin.
Dado planes are designed to cut a groove across the wood's grain. The front-mounted nicker iron would score the edge of the groove and thus avoid splitting and lifting the grain. The adjustable depth stop (which is controlled by the brass screw on top) regulates how deep the blade cuts into the wood.
This plane cuts 1/2 inch grooves and sports two functional blades that are in well-maintained, sharp, usable condition. The plane shows various scratches, dings, and minor wear commensurate with a modestly-used antique tool.
Measuring just over 9 inches long and very solid, this tool of the trade is ready for your collection.