Fisher Space Pen Refill Ballpoint Fine Nib Black Assorted Colours 1 x St John Bag

1 x St John Bag Resealable Plastic Small

tweezers for setting

Extra Wide 50mm

Made From: Manilla board with reinforced tabs

Thickness: 0

Fisher Space Pen Refill Ballpoint Fine Nib Black Assorted Colours 1 x St John BagDescriptionSpecificationsShipping Paul C. Fisher developed the pressurized refill for NASA in 1965. It's still in use today on manned space flights because it performs when other pens fail. The combination of tungsten carbide ball point and thixotropic ink in a hermetically sealed cartridge pressurized at nearly 35 pounds per square inch allows it to write in freezing cold, boiling heat, under water and at any angle even upside down! Pressurized Space