Abstract: A shaft cut off gauge has a base adjustable along a supporting table and a series of spaced slots along the upper edge of an upstanding longitudinal wall for receiving the upper portion of a fence which has a slot in its upper wall and in its lower flange that receives the upper wall of the base in fixed relationship, the fence being mountable in any of various spaced slots to adjust the fence along the base. A combined shaft support and guard is provided for use with the gauge.