Fisher Space Pen, 400RCL Bullet w/Rocket Clip
Discovered in 1965 and approved by NASA for use on the Apollo Missions.
Today is used on all manned space flights by Americans & Russians.
Space Pen contains a sealed-pressurized ink cartridge and writes upside down,
underwater, over grease, in extremely cold and hot temperatures, in zero gravity, with an estimated shelf-life of 100 years!
Made in U.S.A.
More info: Fisher Space Pen, NASA History
