Fisher Cap-O-Matic Space Pen Blue - Writes Upside Down, Underwater, At Any Angle, In Extreme Temperatures

The Fisher Space Pen Cap-O-Matic Blue 775-BL is a compact, durable pen built for professionals who work in challenging environments. With a brass cap, blue barrel, and PR4 black ink, it writes reliably under extreme conditions when ordinary pens fail.

• Length: 5.25" overall
• Ink: PR4 black ink, medium point
• Writing capability: Writes upside down, at any angle, under water, over grease, and in extreme temperatures
• Construction: Brass cap and blue barrel for durability and visibility
• Convenience: Pocket clip for easy access and secure carry
• Packaging: Boxed
• Availability: No Amazon Sales

This pen is ideal for engineers, technicians, researchers, and outdoor enthusiasts who need dependable performance in demanding conditions. The Cap-O-Matic mechanism, paired with a robust brass cap, protects the ink and ensures longevity, while the blue barrel makes it easy to locate in a bag or workspace. Its medium-point PR4 cartridge delivers clear, legible lines suitable for technical notes, diagrams, and signatures, making it a practical choice for fieldwork, labs, or daily carry.