Fisher Original Astronaut Pen - the pen that went to the Moon

When astronauts started to explore space, Paul Fisher realised that no existing pen could perform in its zero-gravity vacuum & temperature extremes. He determined to invent such a pen and the result was the sealed-pressurised Fisher AG-7 "Anti-Gravity" Space Pen. After a rigorous two year testing programme, NASA selected the Fisher Space Pen for use on all the Apollo missions. They are still used on manned space flights.Length : 5.125 inchesDiameter : .375 inchesWeight : 27 gramsInk : ThixotropicCartridge : PressurisedEnvironment : -50 degrees Fahrenheit to 250 degrees Fahrenheit. Zero gravity.Original astronaut pen (retractable). Chrome plated. Supplied gift boxed. For the engraved version, see below.