Fisher Space Pen Cap-O-Matic Ballpoint Pen—Reliability from Space to the Office

The Fisher Space Pen Cap-O-Matic 775-BL is a pen with a chrome cap and a blue plastic barrel. It can be activated with one hand—quickly and conveniently in any conditions.

This model is suitable for office workers, construction workers, doctors, police officers, military personnel, firefighters, and anyone who needs a reliable writing instrument.

Writing Technology in Extreme Conditions

The pen writes at temperatures ranging from -34°C to +120°C, underwater, in zero gravity, and at any angle. The ink is thixotropic—it is solid at rest but liquefies when writing.

The refill contains a pressurized nitrogen cartridge that pushes the hermetically sealed ink. The pen does not skip or leak.

It lasts up to three times longer than standard ink
Tungsten carbide tip
Brass and steel housing
Clip for attaching to a pocket or backpack
Compact size—fits in a wallet or organizer

Fisher Space Pen Quality and Warranty

Every Fisher Space Pen is hand-tested and comes with a lifetime warranty against manufacturing defects. Precision assembly ensures the product's long service life.

A Fisher Space Pen as a gift for a man

The Cap-O-Matic 775-BL comes in a gift box and is an excellent choice for a gift. 🎁 It’s perfect for teachers, doctors, lawyers, business leaders, military personnel, high school seniors, and craftsmen.

It doesn't melt in the summer or freeze in the winter—it's reliable whether you keep it in your car, your bag, or out in the field.

Features of the Fisher Space Pen Cap-O-Matic 775-BL

Specifications	Value
Brand	Fisher Space Pen
Model	Cap-O-Matic 775-BL
Body Color	Blue
Cap	Chrome-plated
Housing Material	Plastic, brass, steel
Nozzle	Tungsten carbide
Length	13.7 cm
Magazine	Fisher SPR4 – black, medium thickness
Compatible Refills	SPR Cartridge Series
Operating temperature	-34°C to +120°C
Warranty	Life-long
Contents of the Set	Pen and Gift Box

The History of the Fisher Space Pen—From NASA to You

During NASA's early missions, astronauts used mechanical pencils. In 1965, 34 mechanical pencils were purchased for the Gemini program at a total cost of $4,382.50—about $128 each.

Paul S. Fisher of Fisher Pen Co. developed a pen that works in zero gravity, underwater, and at extreme temperatures. The company invested about $1 million of its own funds, without any funding from NASA.

In 1967, after rigorous testing, NASA equipped the astronauts of the Apollo program with these pens. Approximately 400 were purchased at a price of $6 each.

In February 1969, the Soviet Union also purchased 100 Fisher ballpoint pens and 1,000 refills for the Soyuz missions. Prior to that, their cosmonauts had used pencils. To this day, astronauts and cosmonauts rely on this technology.

Frequently Asked Questions

Can the Fisher Space Pen Cap-O-Matic write underwater?

Yes, the Fisher Space Pen Cap-O-Matic writes underwater. The pen uses a pressurized nitrogen cartridge that delivers ink regardless of the environment. The pen works in zero gravity, underwater, and at any writing angle. This makes it a reliable tool for working in challenging conditions.

At what temperatures does the Fisher Space Pen Cap-O-Matic 775-BL work?

The pen works at temperatures ranging from -34°C to +120°C. The ink does not freeze in the winter and does not run in the summer heat. This makes it suitable for outdoor use, in vehicles, and under extreme working conditions. It can be stored in a car or backpack without risk of damaging the refill.

What type of refill does the Cap-O-Matic 775-BL model use?

The model comes with a black Fisher SPR4 refill with a medium line width. Refills from the SPR Cartridge series are compatible for replacement. The cartridge contains hermetically sealed thixotropic ink and a pressurized nitrogen cartridge. The ink lasts up to three times longer than standard ink.

Is this pen a good gift?

Yes, the Fisher Space Pen Cap-O-Matic 775-BL comes in a gift box and is an excellent choice for a gift. It’s suitable for men and women in various professions—doctors, lawyers, military personnel, police officers, teachers, business leaders, and high school seniors. The pen combines practicality with an interesting history and unique technology, making it a great conversation starter. At Dulotec.COM, you’ll find this model at an attractive price.

What is the warranty on Fisher Space Pen ballpoint pens?

Every Fisher Space Pen comes with a lifetime warranty against manufacturing defects. Each model is precision-assembled and hand-tested before leaving the factory. The warranty covers defects in materials and workmanship. This is a testament to the quality the company has maintained for decades.

What materials is the Cap-O-Matic 775-BL pen made of?

The pen is made of brass and steel. The cap is chrome-plated, and the body is made of blue plastic. The tip of the refill is made of tungsten carbide—a hard, wear-resistant material. The clip allows it to be attached to a pocket, organizer, or backpack.

Why did NASA choose Fisher Space Pens?

NASA chose the Fisher Space Pen after early missions had used pencils, which proved unsuitable for the space environment. Paul S. Fisher developed a pressurized-cartridge pen that works in zero gravity, underwater, and at extreme temperatures. The company invested about $1 million of its own funds without any funding from NASA. After rigorous testing, Apollo astronauts were equipped with these pens starting in 1967. Later, the Soviet Union also purchased Fisher Space Pens for its Soyuz missions.