Original German Pre-WWII Brass Optical Tripod Mounting Coupler and Calibration Unit MG 42 Bolt & Barrel Assembly The three main manufacturers of

The three main manufacturers of the AN-5740 and AN-5740-1 were The Hamilton Watch Co

The instrument appears to operate perfectly

Lend-Lease issue Thompsons were used by the British Army

U S S GRIDLEY

Original German Pre-WWII Brass Optical Tripod Mounting Coupler and Calibration Unit MG 42 Bolt & Barrel Assembly The three main manufacturers ofOriginal Item: Only One Available. So often these are missing, the interfacing unit allowing a "Rabbit Ears" pair of Binoculars Field Glasses to be mounted onto the standard German Optic's tripod. The early production example is constructed almost entirely of BRASS, which has been polished, and dates from the late pre war 1930's. Brass became a very scarce commodity once WWII started, so these couplers were then constructed from steel. Original