WW2 Royal Air Force “Sector” Clock

WW2 Royal Air Force "Sector" Clock

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WW2 Royal Air Force "Sector" Clock
circa 1942
mahogany finish case with colored coded "sector" dial, brass 8-day time-only movement with platform escapement, marked "RAF" on the dial and "Coventry, 1942" on the movement
17 x 5 inches

During World War II, Sector Clocks played a significant role in the Battle of Britain, the Blitz, and the bombing of British cities that followed by the Germans. The Sector Clock was a fundamental part of Ground-controlled interception before modern computerized systems were put in place for airspace control. The clocks were used to track and identify enemy aircraft in the airspace surrounding Britain, with various colors representing the time since the aircraft had been sighted. The Sector Clock was also used to help coordinate the interception of enemy aircraft, with fighters then scrambled to intercept them. These clocks were used across all RAF and Royal Observer Corps Operations Rooms, and helped to successfully defend Britain from enemy air raids.