Plane for creating grooves for joints, one side creates tooth and other creates groove for the tooth to fit into, blades face each other in slots on either side of block. P-shaped wedges hold them while allowing for adjustment. "CREAGH William Cin Ohio" on end.
same design as 1982.24.01 so has been cataloged together as 2 planes donated by Henry Davis, formerly owned by James Knowlton. Davis was neighbors with the Knowltons on Wilson St and probably acquired it then.