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Ammunition Type: Cap & Ball
For the United States
as the simplified design makes it more resilient
This became the famous Lanchester of WW II
Original U.S. WWII Sperry S-1 Bombsight in Steel Transit Case - Unissued British Holsters Ammunition Type: Cap & BallOriginal 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
