Original WWII U.S. Navy Gun 3 Inch Wooden MK6 Drill Round - Dated 1944 U.S. Field Gear So they adopted this Mask

So they adopted this Mask instead

can be used to calculate a position line on a nautical or aeronautical chart

As this mask was produced in 1940

light-brown in color…” This departure from the blue uniform

Original WWII U.S. Navy Gun 3 Inch Wooden MK6 Drill Round - Dated 1944 U.S. Field Gear So they adopted this MaskOriginal Item: Only One Available. This is a fantastic totally inert, wood construction, drill round for the USN 3 in. 50 calibers QF gun that weighs 23 lbs 8 oz. (10. 7 Kg), and measures 34 3 4 (88. 3 cm) in length. The round is in excellent condition and is weighted to match a live shell for accurate training handling purposes. The zinc plated steel base still has clear markings: 3" DUMMY CARTRIDGE MK 6 50 CAL and HMC 1944 329486 B 6 BFT (with USN