Rite In The Rain Space Pen Cap O Matic

Write anywhere, on anything, in any conditions. The Fischer Space Pen is perfect for the outdoors and changeable weather conditions. . The Space Pen that required thousands of experiments and 18 months of testing by NASA. Suitable for writing in temperatures ranging from 30 to 250 F. Suitable for writing at any angle including upside down. Ultra hard tungsten carbide ball. Thixopetic ink is hermetically sealed and has an extremely long shelf life. Pressurized cartridge writes three times longer than standard ink cartridges. Black ink, medium point