Abstract: A device for checking bills of currency to detect bills which are stuck together including two stationary portions having opposed gauging surfaces which are spaced apart a distance slightly greater than the thickness of a bill of currency, whereby a single bill will pass between the gauging surfaces, but two or more bills which are stuck together will not pass.

Abstract: A walker including a frame, the forward portion of which is provided with rotary members at its lower end for advancing the walking aid. The rotary members comprise 2 spoked wheels fixed to the ends of and rotatable with an axle, the spokes of the rotary members being out of phase to advance the walking aid in a step-by-step fashion in response to the shifting of weight by the patient from one side of the frame to the other.

Abstract: A work table and hold-down assembly for adapting a power hand saw such as a saber saw or jig saw for bench use. The assembly includes a work table which is clamped to the base of the saw, the work table having an opening through which the saw blade passes. A work hold-down member is held in adjustably spaced relation to the work table by a clamping swivel stem rotatably mounted in the opening of the work table, thereby permitting the work-holding member to be moved laterally with respect to the work. A safety shield carried by the work-holding member is in spaced, surrounding relation to the saw blade.