Elgin Stopwatch timer 1/5 sec ORD dep. Depth Charge , Torpedo timer, artillery timer. USA Ordnance department. ca. 1942 Working Elgin Timer Bomb Torpedo Pocket Timer 7j . This WWII Elgin Timer is marked ORD DPT U.S.A’. NO OS 3404. was exported to U.K during WW2 as part of USA allied help. Dated 1941-1945 these stopwatch timers became a staple for U.S. and Allied military usage as the most common was issued to U.S. B-17 navigators. This timer model type was used by the Navy during WWII for depth charges and torpedos. One of its most important uses of the A-8 was mainly used for flight navigation, but it was also utilized by Military Engineers, Forward Observers, Submarine Crews and other military outfits. The large numbers indicate seconds, and with each full rotation (60 seconds) the hand in the small dial moves one increment clockwise. The numbers in the small dial indicate minutes, so each each full rotation of that hand is 30 minutes. The large sweep second hand moves around once in 30 seconds. ca 50*63*15mm 110gr In good working condition.