The United States Army Ordnance Corps, formerly the United States Army Ordnance Department, is a sustainment branch of the United States Army, headquartered at Fort Gregg-Adams, Virginia. The broad mission of the Ordnance Corps is to supply Army combat units with weapons and ammunition, including at times their procurement and maintenance. Along with the Quartermaster Corps and Transportation Corps, it forms a critical component of the U.S. Army logistics system.
Operation Paperclip scientists of the Ordnance Rocket Center
U.S. Ordnance Corps wall plaque
U.S. Ordnance Corps insignia badge
A safety campaign around ordnance by U.S. Army published during the height of World War II (c. 1942–1943) by the War Production Board
Interchangeable parts
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Interchangeable parts are parts that are identical for practical purposes. They are made to specifications that ensure that they are so nearly identical that they will fit into any assembly of the same type. One such part can freely replace another, without any custom fitting, such as filing. This interchangeability allows easy assembly of new devices, and easier repair of existing devices, while minimizing both the time and skill required of the person doing the assembly or repair.
Ford would often use interchangeable parts between car models to save costs, but slowly decreased after it lost market share to Chevrolet
A pulley block for rigging on a sailing ship
A wooden gear from one of Terry's tall case clocks, showing the use of milled teeth.