OFFICIAL U.S. NAVY INSPECTION STAMP RELIC
WORLD
WAR ONE & TWO
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Presented is an official U.S. Navy inspector’s hammer with dies
at each end. The large die is 1 3/16″ W x 1 6/16″ H. The small die is 9/16″ W x 9/16″ H. The mark stamped on an item indicated
it has passed inspection. It dates from at least the first days of WW I, and maybe earlier. It was used extensively in WW
II, and examples are frequently seen on MK V diving helmets and their ancillary gear, including, but not limited to air control
valves, compressors, and check valves. We’ve also seen them on USN bells. The latest use we know of is on an equipment plate
dated 12-52. The stamp is made in reverse of how the image appears on the object. In the photos, it is shown both ways.
stamp. Actual stamp on the left. As it appears on object stamped to the right.It is reported by companies that made these items during WW II, that the inspectors
kept these tools under lock and key, and that they never had access to them. At the end of the War, when the inspectors left
the plants, this tool went with them.
stamp. Actual stamp on the left. As it appears on object stamped to the right.
SPECIFICATIONS: Length of head 6″ Length
of handle 15 1/4″ largest diameter 1 1/8″
The large die is 1 3/16″ W x 1 6/16″ H. The small die
is 9/16″ W x 9/16″ H.
Weight 1 lb 8 oz
According to Aviation & Archeological Investigation & Research, this mark was also
found on U.S. Navy and Marine aircraft.
Various Customer Inspection, usually seen on Navy / Marine planes.
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