USAF / RAF M-308-B signal lamp, issued with Gibson Girl radios (above). Includes adjustable webbing strap and 2 pin plug on attached cord. Spare bulb included in dome.

Sperry control flight vertical gyro. Auto pilot. Type E-4 / A12D. In use during the 1940's - 1950's. 9"D x 6-1/2"H.

When power is applied and unit is in flight, gyro produces signals for the autopilot system on flight deck. Gyro should be operational and will make a great project or display. Our units are complete and have not been pilfered.

Midland Manufacturing (USA) PRC-6 41 piece crystal set. Case Serial #2208. NOTE: See PDF for case inventory. Sold as-is.

Siemens Brothers BBC crystal radio headphones with intact plugs. 4k ohms. Excellent, like-new condition. Original box opened for pictures and identification. Tissue wrap replaced as it was crumbling. Circa 1922 - 1923.

WWII footlocker. Olive drab. Metal clad. 17" x 32" x 12" high.

Perhaps the only Automatic Bearing Indicators in existence today and new in the crates to boot. Made by Federal Telegraph for WWII and delivered March 31, 1942, right in the thick of it. New technology was being pushed to the edge of the envelope. I suspect they never were adopted as standard equipment. Includes prototype style handmade manual (original and marked restricted of course) with each scope.

Basic theory of operation is a small 1/8 HP 1140 rpm motor drives a goniometer directly and a set of magnetic deflection coils. A 5BP1 CRT is positioned inside the rotating deflection coils and thereby deflected. An optical system consists of an illuminated scale and a mirror so positioned that the reflection of the scale appears to coincide with the pattern obtained on the screen of the CRT.

The manual indicates the following voltages are required:  -800 vdc, -650 vdc, -160 vdc, -135 vdc, 6.3 vac and 11 5vac 60 Hz. Only four available. 120 pounds gross weight. 46" long.

Bureau of Ships US Navy Azimuth Circle in carry case. Mark III, Model 2. Ring diameter: 10-1/4". Case measures 11" x 11" x 3-1/2". S/N: 1272. Contract No. 79969. Made by National Electrical Machine Shops. Used on WWII naval ships. NOTE: Case missing pieces (hinges, catches, etc.). Inside rough.

Antique WWII Beacon Receiver. BC-1206-C, Model 524, SC6624A Signal Corps ID# Setchell-Carlson beacon receiver covers 200-400 KHz. In the original box. Most commonly used in P-51's and P-40's. 4" x 4" x 7". Some bin wear due to the passage of time. Made in USA. Does not appear to have been used, two screws on top of case missing. See pics. This item sold as a collector's piece only, no guarantee of electro-mechanical function.

Riganas 539/APS-20HZL horn assembly is available stand alone without reflector. "C" male connector on feed end. Part of APS-20 WWII radar system.