This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
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- Circular wooden piece with a top-fitting brass plate or washer
- with a center hole. There are various holes. Two are small and
- shallow and located on the side. But there are four cut into
- the top and sides which intersect in the middle. The plate is
- held in place by screws.
Country of Origin
- Iron Alloy
- Copper Alloy
- 3-D: 3.8 x 5.4cm (1 1/2 x 2 1/8 in.)
- Storage: 16.2 x 15.2 x 5.7cm (6 3/8 x 6 x 2 1/4 in.)