Fisher Space Pen Cap-O-Matic Space Pen M4B NASAMB - Writes Upside Down Underwater And In Extreme Temperatures

The Fisher Space Pen Cap-O-Matic Space Pen M4B-NASAMB is a compact, rugged writing tool built for professionals who need reliable ink in demanding environments. Finished in matte black with the NASA logo, it pairs field-ready durability with everyday portability.

• Length: 5.25" overall, providing a comfortable grip that fits in pockets and toolkits.
• Finish & Branding: Matte black with NASA insignia for a distinctive, purpose-driven look.
• Ink & Point: PR4 black ink, medium point delivers smooth, legible lines.
• Cap-O-Matic Mechanism: Cap-O-Matic design ensures quick cap removal and secure protection when stored.
• Write-Anywhere Capability: Writes upside down, at any angle, underwater, over grease, and in extreme temperatures.
• Packaging: Boxed for gifting, presentation, or easy stocking.

This space-tested pen keeps your notes legible when it matters most. The pressurized PR4 cartridge maintains ink flow across temperature swings and through challenging conditions, so you can jot observations on a wet deck, in a greasy workshop, or during cold-weather fieldwork without interruption. The NASA-branded finish signals professional quality, and the compact 5.25" size makes it an unobtrusive, ready-to-use writing companion in the field or at your desk.