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National Air and Space Museum Collection
This is a solid, rounded object with various slats which allows it fit between two form fitting blocks of wood.
Transferred from the Smithsonian Institution to the United States National Museum.
Country of Origin
United States of America
3-D (Overall): 8.9 × 10.8cm (3 1/2 × 4 1/4 in.)
National Air and Space Museum
Restrictions & Rights
Usage conditions apply