Fisher Space Pen Cap-O-Matic Pen Green

Fisher Space Pen is the brand that put a reliable ballpoint in the hands of NASA astronauts. Paul C. Fisher developed a sealed, pressurized refill so ink flows when ordinary pens fail—upside down, through grease, in heat and cold, and in zero gravity. Decades later, Fisher still manufactures many models in the United States to the same demanding standard.

The Fisher Cap-O-Matic is the one-hand workhorse of the lineup: tap the top to extend the point, tap again to retract. Law enforcement, trades, medical staff, and outdoor users reach for it when gloves, weather, or odd positions make ordinary pens unreliable. Same pressurized Fisher ink—writes longer and in tougher conditions than typical ballpoints.

Details

Fisher PR4 black ink, medium point cartridge. Write upside down, at any angle, underwater, over grease, and in extreme temperatures.

Specifications