Amazon is selling the Fisher Space Pen for only $15.12, originally priced at $22. Its “patented ink cartridge was designed by Paul Fisher for NASA in the 1960’s enabling it to write in temperatures from -30 to +250 degrees Fahrenheit, under water, in zero gravity, at any angle, even upside down.” Product page. Continue reading to see how the Fisher Space Pen is made.

When closed, the Bullet Space Pen is the perfect size to carry in your wallet, pocket, purse, car glove box, organizer or toolbox. When open it’s a full sized, evenly balanced writing instrument.

[via Amazon]