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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 A single, circular wooden piece with a 1.5" hole in the center. Dimensions 3-D (Diameter x Height): 12.1 × 2.2cm (4 3/4 × 7/8 in.)
Storage: 17.8 × 17.8 × 4.4cm (7 × 7 × 1 3/4 in.)
 Materials Wood
Varnish
Graphite
 Inventory Number A19820907000 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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