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Fisher Space Pen

About the Fisher Space Pen

Paul Fisher, an American specialising in the production of precision bearings for World War 2 Bomber planes, did not imagine that one day in the future he would revolutionise the writing capability of the ball point pen... and with it, enable communication between astronauts in outer space.

Paul's mission began in 1945, with the realisation that the ball-bearing business would end along with the War. In his job search, he heard about a company seeking to produce a "ball point" pen. The pen company thus far had an unreliable pen; the only available refills allowed too much ink flow, leaked, or dried out too soon.

By 1950 Paul Fisher had not only solved the pen refill problems, he began his own production of ball point pens, further improving the performance of the refill and introducing the Bullet Pen.

Paul was positively passionate about his pens! A million dollars in research later, he invented a cartridge that would write in any position, thanks to a refill pressurised with nitrogen gas! Ink stained jackets and pants were gone for good, and a wonderful, smooth performing ball point pen was born.

Paul had another mission in mind for his pen - he introduced this unique pen cartridge to NASA! The Fisher Pen underwent extensive testing, and was subsequently approved for a trial mission in outer space. In 1968 the Fisher Space Pen was whole-heartedly approved and ordered for use by astronauts on ALL MISSIONS IN OUTER SPACE.

The Fisher Space Pen is still used today on all manned space flights.

Stainless steel, precision-machined socket prevents leaks and oozing, yet delivers instant uniform ink flow.

Thixotropic ink in a hermetically sealed and pressurised reservoir writes three times longer than an ordinary ball point pen.

Ink will not dry out for over 100 years! Writes under water or over grease at temperatures of - 34C to +120C.

Prior to flying on any operational mission all instruments must pass through a rigorous testing program. The Fisher Space Pen was tested for two years before being accepted by NASA.

Used on ISS International Space Station, Apollo Missions, and Shuttle Missions. Russian Soyuz and MIR Space Flights, ARIANE French Space Program.

Used during the Everest North Face Ski Expedition 1997.

Used in many professions including military and law enforcement.

Seen in the Guinness Book of records as "Most Versatile Pen".

Here at The Pen Zone we sell a large range of the original Fisher Space Pens as used by NASA and refills in the UK. Most Fisher Space Pens come gift boxed and can be gift wrapped upon request.

How do Fisher Space Pen Refills Work?

Unlike ordinary ball pens which rely on gravity to feed ink, the replaceable Fisher Space Pen refill cartridge is pressurised. At nearly 35 psi, ink is continuously fed to the tungsten carbide ball, allowing the user to write at any angle, even upside down. This advancement required the development of a special ink.
The new visco-elastic 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 liquifies the solid gel thixotropic ink, allowing the pen to write smoothly and dependably on most surfaces and even under water.
Evaporation, wasted ink and back leakage are eliminated. Shelf-life is increased to an estimated 100 years.
Operating temperatures range from -34c to +120c.