A vise having a pair of vise jaws for clamping a workpiece. A rotatable protractor is provided in one of the vise jaws. A platform is carried by the protractor which extends beyond the vise jaw to support a workpiece. Worm drive gearing between the protractor and a manually-manipulable worm provides for rotating the protractor and the platform to a desired rotational position. A removable member may be connected to the platform. An adapter may be received on the platform to support the workpiece.