Army Air Forces Sighting Head Bombsight Type T-1. The Sighting Head Bombsight Type T-1 was manufactured by the A.Spark Plug Division of General Motors in Flint, Michigan. This type of Sighting Head was used in various planes during WWII such as the B-25 and Mosquito bombers. This unit has been sitting safely in storage for over 50+ years and is a sought after collectors item. Listing includes the Sighting Head as you see in the photos. Additional photos are available upon request. This item is in the category "Collectibles\Militaria\WW II (1939-45)\Original Period Items\United States\Field Gear, Equipment"._inc" and is located in this country: CA. This item can be shipped worldwide.