This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
Black-coated cylindrical body with cadmium plated mounting attachment, rotating scale, and double-pronged pin key. Indicator face has a radium-painted scale with range 0 to 33.
Transferred from the Department of Commerce
Country of Origin
United States of America
- HAZMAT: Cadmium Plating
3-D: 10.2 × 12.7 × 8.3cm (4 × 5 × 3 1/4 in.)
National Air and Space Museum
Restrictions & Rights
Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum