The Ford Instrument Company was a U.S. corporation known for being the primary supplier of fire control

Rangekeeper Rangekeepers were electromechanical fire control computers used primarily during the early part of the 20th century. They were sophisticated analog computers whose development reached its zenith following World War II, specifically the Computer ...

s and analog computers for the

United States Navy The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...

before and during

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...

. A personal blog, Doug Coward's Analog History Museum, includes a page with details for the Ford Instrument Company Computer Mark I that was used after 1939 on WW II naval guns up to 5 inch and anti-aircraft guns. This page has a background stating that the Ford Instrument Company is a subsidiary of

Sperry Rand Sperry Corporation was a major American equipment and electronics company whose existence spanned more than seven decades of the 20th century. Sperry ceased to exist in 1986 following a prolonged hostile takeover bid engineered by Burroug ...

, indicating that the displayed page was supplied by Sperry while operating as

, 1955 and 1978.

References

Defunct computer companies of the United States Military computers {{US-company-stub