This is a 90-degree right-angle parallel mount dial pointer (part #0188). It features a flat cord/track mounting base that transitions at a 90-degree bend to offset the indicator arm, allowing the pointer shaft to ride parallel along the dial scale or slide-rule track. This style was engineered for deep chassis mounts and recessed glass dial assemblies found in late 1930s to 1950s console and tabletop tube radios from manufacturers like Zenith, RCA Victor, Philco, Crosley, and General Electric.