Original WWII U.S. military TS-36/AP test set, dated 1944

Original WWII U.S. military TS-36/AP test set, dated 1944 and marked Signal Corps / AAF-style equipment. Front plate is marked TS-36/AP, with inspection/lab stickers and military stenciling. Unit includes the analog microamps D.C. meter, battery/external battery input, adjustment knobs, measurement selector, and side-mounted brass waveguide-style opening.

This appears to be a wartime radar/radio test instrument used with airborne or ground radar-related equipment. The case and face show normal age, paint wear, scratching, oxidation, and grime from storage. The side/top cover is missing, exposing part of the internal section. Untested and sold as a collectible/display/restoration piece.