Abstract: A vise for making field repairs on chain saws and chain saw parts is disclosed. The vise has two fixed jaws. Between them is a movable jaw. Additional clamping members in the form of wing bolts are threaded through one of the jaws. The vise also has an anvil upon which various repairs or operations such as hammering may be carried out. Protruding from the bottom side of the anvil is a mounting spike. The vise may be mounted horizontally on a stump or vertically on a tree trunk merely by driving the spike in with hammer blows on the anvil. Thus mounted the vise can be pivoted 360.degree. to facilitate positioning of the workpiece.