WWII Signal Corps Calibrator BC-726-A Radar Test Set Sublimation and target practice

and target practice

Surface wear consistent with age

Nearly all Model 1890s feature octagon barrels

This example features a 0–300 volt direct current (DC) scale

WWII Signal Corps Calibrator BC-726-A Radar Test Set Sublimation and target practiceWWII Signal Corps Calibrator BC 726 A Radar Test Set Bell Labs Western Electric Serial No. 123 Original WWII U. S. Army Signal Corps Calibrator BC 726 A, an uncommon radar laboratory and calibration instrument developed for the Signal Corps Radar Laboratory by Bell Telephone Laboratories and manufactured by Western Electric Company. The identification plate is marked: Signal Corps, U. S. Army Calibrator BC 726 A Designed for Signal Corps Radar