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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 Two pieces of dark brown stained wood, with a slight wooden protrusion from the side. There is an open depression on the top of each knob. The bottom of each piece is flat. Dimensions 3-D (No. 1): 4.3 x 3.2 x 2.5cm (1 11/16 x 1 1/4 x 1 in.)
3-D (No. 2): 4.9 x 3.2 x 2.5cm (1 15/16 x 1 1/4 x 1 in.)
Storage: 13.34 x 11.11 x 4.45cm (5 1/4in. x 4 3/8in. x 1 3/4in.)
 Materials Wood
Unknown Coating
 Inventory Number A19820870000 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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