Imperial Japanese Naval Air Force parachute packers weight. A fabric covered metal (lead?) bar approximately 13 x 4.5 x 2cm that weighs an astonishing 1.2kg. Marked with a Japanese Naval anchor symbol. These were used to hold the silk in place when pleating the canopy (RAF packers used bags of lead shot). Several would be used together when packing a canopy. Incredibly rare. Very good condition. Stock code S27634C.