An item designed to count the number of ships passing over an underwater mine. It is set to allow detonation after a predetermined number of ships have passed.
Classification: Parts for bombs, grenades, torpedos, mines, and similar munitions of war
NSN 6610-01-069-1156
NSN 5996-00-484-9196
NSN 6240-01-603-0143
NSN 6320-01-006-6138
NSN 7035-00-968-4848
NSN 5920-01-349-5554
NSN 5855-01-364-1005
NSN 5920-00-908-1929
NSN 5950-00-965-7204
NSN 5925-00-304-3315
NSN 5920-01-459-4588
NSN 7035-01-625-7795