A precision-engineered Fisher Space Pen in raw brass, the Cap-O-Matic combines industrial durability with scientific innovation. The unfinished brass barrel houses Fisher's NASA-developed pressurized ink cartridge that forces ink through a tungsten carbide ball at 35 PSI, allowing this pen to write in temperatures from -30°F to 250°F, underwater, through grease, and at any angle—even upside down in zero gravity.

The solid brass construction (a natural copper alloy) provides antimicrobial properties that actively kill bacteria on contact, making this pen ideal for medical professionals, travelers, and anyone concerned with hygiene. Unlike coated pens, this raw brass develops a rich, one-of-a-kind patina through daily handling, with your unique skin oils and usage patterns creating a personalized finish that deepens over years. The satisfying click mechanism deploys the point with a single press, while the polished chrome clip secures it firmly to pockets, notebooks, or flight suits.

Your Cap-O-Matic arrives with a Fisher PR4 medium point black ink cartridge installed and ready to write 12,500 linear feet before needing replacement. The precision laser engraving creates a tone-on-tone effect that becomes more pronounced as the patina develops around it, preserving your personalization permanently. Backed by Fisher's lifetime warranty against manufacturing defects, this engraved keepsake gift combines scientific functionality with heirloom-quality materials.

Features

• Antimicrobial copper alloy
• Pressurized PR4 medium point black ink
• Polished brass finish with chrome appointments and tone-on-tone engraving
• Click action ballpoint pen
• Lifetime warranty against manufacturing defects.