A mortise marking gauge allows you to mark both sides of a mortise at the same time and maintain the fixed width of the mortise.
One side of its posts has a single pin for general marking with the grain or on end grain; its other side has double pins adjustable to approximately 2" for layout of mortises. Made with solid brass hardware, wear plates, and fitted with milled thumb screw in head. Overall length 7-3/4".

from $48.99