Zero Gravity Pen

‌The Zero Gravity Pen is a pen that uses pressurized ink cartridges and can write ...

Zero Gravity Pen that uses pressurized ink cartridges and can write in zero gravity, underwater and on greasy paper, at any angle, and in a very wide range of temperatures.

Unlike most ballpoint pens does not rely on gravity to get the ink flowing. The cartridge is instead pressurized with nitrogen at 35 pounds per square inch. This pressure pushes the ink toward the tungsten carbide ball at the pen's tip. The ink, too, differs from that of other pens.