Original U.S. WWII Sperry S-1 Bombsight in Steel Transit Case - Unissued Military Equipment This was the largest payload

This was the largest payload of any bomber in the war

The overall blade length is approximately 19''

Fully Cleaned and ready to display

Most enlisted soldiers wore wool trousers and a tunic with four external pockets

Original U.S. WWII Sperry S-1 Bombsight in Steel Transit Case - Unissued Military Equipment This was the largest payloadOriginal 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