Black cast metal signal lamp with long electrical cable and trigger-operated handle. The device features a large circular lens at the front and an optical sighting scope mounted to the side for precision signaling. Three screws secure the upper and middle housing sections, allowing access for maintenance.
The adjustable rear knob regulates the light’s intensity or beam focus, while the trigger on the handle operates the signaling pulse — commonly used for Morse code communication between ships, aircraft, or control towers.
The cable is insulated in black rubber with visible green and orange inner wires, suggesting postwar field replacement or adaptation.