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Fisher Measure Twice Pens
The Measure Twice Tactical Space Pen is built for people who carry tools, not accessories. It features a bolt-action mechanism with a smooth, satisfying deployment, a built-in ruler along the barrel with both standard (up to 3.5") and metric (up to 9cm) markings, and a concealed tungsten carbide glass breaker in the tail cap. The lightweight aluminum body is impact, scratch, and corrosion resistant. Like every Fisher Space Pen, the pressurized cartridge writes reliably in any orientation, in extreme temperatures, underwater, and in zero gravity.