Abstract: A cross cutting guide fence and gauge for radial arm saws comprises a bar member to be mounted in a conventional transverse saw table slot. An upwardly opening saw blade clearance kerf extends transversely across the member. Sawn length gauging scales on display panels are carried by the bar at opposite sides of the clearance kerf and are longitudinally adjustable. For accurate duplicatively gauging the length of fixed length sawn workpieces, a replaceable gauge block may be selectively adjustably longitudinally mounted on the front face of the bar at either side of the kerf.