A rare Elgin 24-hour military aircraft watch/clock in the original mounting bracket/holder with the original wires still attached. They were designed to timestamp bomb drops or the gun's camera recordings. It is housed in the original non-magnetic metal mounting bracket and connecting wires. The mounting bracket measures approximately 4.5” H x 1.75” W 1.5” D and weighs about 5 ounces. The watch is about 30 millimeters in diameter.