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Pen, Ball Point, AG-7, Apollo


Display Status:

This object is on display in the Apollo to the Moon exhibition at the National Air and Space Museum in Washington, DC.

Collection Item Summary:

This pen is identical to those carried aboard Apollo flights 7, 8, 9, 10, and 11. It is a "space pen" and is able to be used in space at any orientation.

The Fisher AG-7 Space Pen was the result of a "million dollar research program" undertaken by the Fisher Pen Company during the 1960s, when NASA needed a pen capable of writing in the gravity-free environment of space.

On Earth, ball point pens rely on gravity for ink feed and have a small hole in the top of the ink cartridge through which the ink evaporates slowly. This pen is pressurized with nitrogen which forces the ink out through the tungsten-carbide ball, and the ink was specially formulated so it would not evaporate.

Transferred to the National Air and Space Museum from NASA in 1970.

Collection Item Long Description:

Data Source

National Air and Space Museum


Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum


Credit Line

Gift of the Fisher Pen Company


Stainless Steel


3-D: 13.2 x 1.3cm (5 3/16 x 1/2 in., 1/16lb.)

Country of Origin

United States of America



Inventory Number