This is a parallel mount dial pointer (part #114805-1). It features a compact 1" x 3/8" rectangular mounting base designed to attach to a slider track or drive cable, extending a short 1-inch indicator needle parallel along slide-rule glass dial scales. This style was commonly used in compact tabletop radios and receiver units manufactured by companies like Philco, Zenith, RCA Victor, General Electric, and Crosley.