Fisher Military Cap-O-Matic Space Pen Overview:

How many times have you reached into your flight bag or kneeboard during a flight only to find the ink has dried or the pen no longer working?  This happens even more frequently the higher altitudes that you fly.  The Fisher Space Pen is your solution to always having a working writing instrument during flight and on the ground.

Unlike ordinary ball pens which rely on gravity to feed ink, the replaceable Space Pen cartridge is pressurized. At nearly 35 pounds per square inch, ink is continuously fed to the tungsten carbide ball, allowing the user to write at any angle, even upside down. This advanced technology required Fisher Space Pen Co to develop a new and special ink.

And they did. The new visco-elastic, thixotropic ink, with a consistency similar to that of very thick rubber cement, flows as a result of the shearing action of the rolling ball in its socket. This shearing action liquefies the solid gel thixotropic ink, allowing the pen to write smoothly and dependably on the most surfaces and even underwater.

Evaporation, wasted ink and back leakage are eliminated. The estimated shelf-life of these pens is over 100 years.

• Writes from -30º to 250º F
• Writes at any altitude
• Writes on Wet Surfaces
• Writes on Photographs
• Writes Underwater
• Writes at any angle

The Ultimate non-reflective Matte Black capo-matic Space Pen used by Military forces around the world. Made by Fisher Space Co. in Boulder City Nevada. Writes at any angle, under water and extreme enviroments..

• Style: Cap Activation
• Length: 5.375"
• Cartridge: Fisher PR4 Black ink Medium point

Made in the USA.