Size: 6 x 4.5 inches

This is original early war ‘CLASSIFIED’ U.S. Army Explosive Ordnance Disposal blueprint that shows the infamous Japanese 25 mm Anti-Aircraft Pom-Pom Shell and 20mm Japanese Tracer Anti-Aircraft Shell This photographIs dated is being traced in 1943 and is marked drawing No. 7 and No. 2. This detailed blueprint drawing shows the outside the body of the explosives, as well as a cut (half) section showing the inside components, as well as a detailed diagrammatic sketch of the exploder systems. This blueprint would've been used by the soldiers on the front line and the newly formed Bomb Disposal Squads during World War II to deactivate discarded, forgotten, or dud (fired but did not explode) Japanese explosive ordnance. These cards have been recorded as being carried by the soldiers of these Bomb Disposal Squads in both Europe and the Pacific Theater to aid them in the disarming of different ordinance types.

For more information of the history and research done by Karl L. Rubis (an Ordinance Branch Historian, and graduate of the U.S. Army Ordinance School) we recommend reading, The Ordinance Department Bomb Disposal Squad in World War II.

https://goordnance.army.mil/history/articles/bomb.pdf