Envelope with Screws and Nuts, Altimeter, Barometric


Display Status:

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.

Collection Item Summary:

This envelope contains mounting hardware for an altimeter used for ground testing in the Gemini program. The altimeter gave a reading from 24 km (80,000 feet) to zero to assist the Gemini crew in their return to Earth from space.

Collection Item Long Description:

Data Source

National Air and Space Museum

Restrictions & Rights

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

Credit Line

Transferred from NASA


  • Paper
  • Ink
  • Ferrous Alloy
  • Non-Magnetic Metal Alloy


3-D: 14 × 7.8 × 0.5cm (5 1/2 × 3 1/16 × 3/16 in.)

Country of Origin

United States of America


INSTRUMENTS-Flight Management

Inventory Number


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