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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 circular object with flat base and rounded knob in the center which is 1.5" wide and 1.0" high. Once reversed, the object reveals a slightly elevated, rim which gives way to a flatten area with a hole in the middle. The hole indicates a possible means for attaching itself to some support base or mechanism. Dimensions 3-D: 4.1 x 13.3cm (1 5/8 x 5 1/4 in.)
Storage: 15.88 x 15.88 x 5.72cm (6 1/4in. x 6 1/4in. x 2 1/4in.)
 Materials Unidentified Wood
Varnish
 Inventory Number A19820910000 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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