Fisher Space Pen Eclipse ECL – a pen that writes anywhere

The Fisher Space Pen Eclipse ECL is an elegant pen made of polished black plastic with matte black accents. The silver clip allows it to be conveniently attached to a pocket, notebook, or backpack.

The Eclipse model combines an affordable price with all the unique features that Fisher Space Pen is known for worldwide.

He writes where others fail

This space pen works reliably under conditions where ordinary pens fail:

It writes underwater
Operates in zero gravity
It writes at any angle, including upside down
Withstands extreme temperatures ranging from -34°C to +120°C
The ink doesn't run, and writing doesn't stop
It lasts up to three times longer than standard ink

Technology and Design

The body and coating are made of brass and steel. The tip of the cartridge is a tungsten carbide ball—a material known for its exceptional hardness.

The refill contains a pressurized nitrogen cartridge. A small metal cylinder presses against the thixotropic ink, which is hermetically sealed—it is solid at rest but liquefies when writing.

Every Fisher Space Pen is precision-assembled, hand-tested, and comes with a lifetime warranty against manufacturing defects.

Compact and practical for everyday use

The Eclipse ECL's compact size makes it easy to carry—it fits effortlessly into a wallet or organizer. The clip allows you to attach it quickly anywhere.

It doesn't run in the summer heat and doesn't freeze in the winter cold. You can count on it in all conditions.

The perfect gift for a man or a woman

The Fisher Space Pen Eclipse ECL is a suitable, prestigious gift for people in various professions—doctors, lawyers, military personnel, police officers, teachers, engineers, business leaders, and high school graduates. It is practical, durable, and has an interesting history behind it.

Features of the Fisher Space Pen Eclipse ECL

Length: 13 cm
Diameter: 1.4 cm
Fastening: clip
Finish: matte black lacquer
Refill: SPR4 – black, medium line width
Compatibility: Works with all Fisher PR pressurized refills

The Story Behind the Space Pen

During NASA's early missions, astronauts used pencils. For the Gemini project in 1965, 34 mechanical pencils were purchased for a total of $4,382.50—about $128.89 each. This drew serious criticism, and NASA began looking for alternatives.

At the same time, Paul S. Fisher of Fisher Pen Co. designed a pen specifically adapted for the space environment. The new pressurized-cartridge pen works in zero gravity, underwater, in liquids, and at temperatures ranging from -34°C to +120°C.

Fisher developed the pen entirely without funding from NASA. The company invested about 1 million U.S. dollars of its own funds, then patented the product and brought it to market. In 1967, after rigorous testing, NASA equipped the Apollo program astronauts with these pens at a cost of $6 each.

In February 1969, the Soviet Union also purchased 100 Fisher Space Pens and 1,000 refills for use on the Soyuz spaceflights. To this day, both American astronauts and Russian cosmonauts use Fisher Space Pens.

Specifications	Value
Brand	Fisher Space Pen
Model	Eclipse ECL
Length	13 cm
Diameter	1.4 cm
Housing Material	Brass and Steel
Nozzle Material	Tungsten carbide
Finish	Nail polish with a matte black finish
Color	Black with matte black accents and a silver clip
Fastening	Clip
Magazine	SPR4 – black, medium thickness
Compatibility with Refills	All Fisher PR models under pressure
Operating temperature	-34°C to +120°C
Warranty	Lifetime Warranty Against Manufacturing Defects

Frequently Asked Questions

Can the Fisher Space Pen Eclipse ECL write underwater?

Yes, the Fisher Space Pen Eclipse ECL is designed to write underwater. The pen contains a pressurized nitrogen cartridge, and the ink is hermetically sealed. The design prevents moisture from entering, making the pen fully functional even when submerged. This makes it the preferred choice for outdoor activities, in the rain, or in wet conditions.

At what temperatures does the Fisher Space Pen Eclipse work?

The Fisher Space Pen Eclipse ECL performs reliably at temperatures ranging from -34°C to +120°C. Ordinary pens freeze in the cold or melt in the heat. This pen is designed to function under extreme conditions, making it suitable for use during cold winters or hot summer days without compromising writing quality.

What is the difference between thixotropic ink and regular ink?

Thixotropic ink is solid under normal conditions and liquefies only when writing. This means that the pen does not leak, smudge, or leave marks when stored. In addition, it writes up to three times longer than standard ink. The airtight seal in the cartridge ensures that the ink does not dry out over time.

What refills are compatible with the Fisher Space Pen Eclipse ECL?

The pen comes with an SPR4 refill in black with a medium line width. It is compatible with all Fisher PR pressurized refills. Fisher refills are available in a variety of colors and line widths, allowing you to customize your writing to suit your personal preferences.

Is the Fisher Space Pen Eclipse ECL a good gift?

The Fisher Space Pen Eclipse ECL is an excellent gift choice for both men and women. It is suitable for people in a variety of professions—doctors, lawyers, military personnel, police officers, teachers, engineers, and business leaders. It combines practicality with an interesting history and unique technology, making it a memorable and valuable gift. At Dulotec.COM, you can find this pen at a competitive price.

What warranty is offered for the Fisher Space Pen Eclipse ECL?

Every Fisher Space Pen is precision-assembled and hand-tested before leaving the production line. It comes with a lifetime warranty against all manufacturing defects. This demonstrates the manufacturer’s confidence in the product’s quality and guarantees long-term reliability in everyday use.

Has the Fisher Space Pen been used in actual space missions?

Yes, the Fisher Space Pen has been used in actual space missions. After rigorous testing, NASA equipped the astronauts of the Apollo program with these pens. In February 1969, the Soviet Union also purchased 100 Fisher pens and 1,000 refills for the Soyuz spaceflights. To this day, astronauts and cosmonauts continue to rely on them in orbit.