Though originally developed for layout on metal, this finely made steel gauge is also suitable for woodworking. The corners of the square cutter scribe a crisp line across or along the grain in softwoods and hardwoods. The knurled thumbscrew clamps down on a split bushing within the fence to reliably hold the setting without galling the beam. Beam is graduated in 64ths to 6". The fence is just over 1 3/16" in diameter and is hardened to resist wear when used for metalwork.