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This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
Object Details
Date 1887-1903 Country of Origin United States of America Type EQUIPMENT-Test Manufacturer Smithsonian Institution
 Physical Description One piece, solid wood ring with 1/2" rim. Dimensions 3-D: 4.4 x 11.7cm (1 3/4 x 4 5/8 in.)
Storage: 17.78 x 17.78 x 6.67cm (7in. x 7in. x 2 5/8in.)
 Materials Wood
 Inventory Number A19820901000 Credit Line Transferred from the Smithsonian Institution to the United States National Museum. Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
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