A rare Imperial Japanese Navy torpedo detonation timer circa 1943
in the original WWII wood case and marked: July (Showa) 17, 1943 Type 93, Model 2. 6-1/2 x 5-3/4 x 4-1/4 in. (16.5 x 14.6 x 10.7 cm.) the box.
Provenance: The War Museum
This device would have been used to scuttle a submarine; it would be inserted into the nose of a torpedo in place of its normal impact pin or proximity fuse, and set to give the crew 36 minutes to abandon ship. NB: This is a timing device only there is no detonator or explosive material in this device.