Original U.S. WWII Sperry S-1 Bombsight in Steel Transit Case - Unissued Category_MG 34 Feed Assembly The factory sharpened

The factory sharpened

Though it was originally designed to serve as a commissioned officer's personal sidearm

The hair on the back of my neck stood up on end -- like a dog

neck cord and are reversible from camouflage side to white

The other numerals indicate which particular unit inside the division they were a part of

Original U.S. WWII Sperry S-1 Bombsight in Steel Transit Case - Unissued Category_MG 34 Feed Assembly The factory sharpenedOriginal Item: Only One Available. Manufactured by the International Business Machines (IBM) the Sperry S 1 bombsight was designed by Elmer Sperry, Carl Norden's former employer. It had several distinctions from the Norden, and some advantages. The Sperry gyroscopes spun at 24,000 rpm, compared to the Norden gyros which ran at approximately 8,000 rpm. This higher rate of rotation overcame the tendency to precess, so there was no leveling mechanism