Display Status:

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

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 Roy L. Stafford


  • Plastic
  • Non Magnetic White Metal
  • Paint
  • Copper Alloy


3-D: 8.3 × 6.7cm (3 1/4 × 2 5/8 in.)

Country of Origin

United States of America

Physical Description

3in. diameter; range 0-160 mph; black plastic and two brass fittings. Missing bezel, and glass.


INSTRUMENTS-Flight Management

Inventory Number


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