This is a low, flat wooden box containing hooks to mount parallax sectors during an observing run. The label inside of box cover says "parallax sectors".
Swarthmore College donated this set of objects to the Museum in 2017.
National Air and Space Museum
Manufacturer: William Latady, USA
Inventory Number: A20200006000
Materials: Copper Alloy
Materials: Ferrous Alloy
Materials: Uncharacterized Synthetic Material
Dimensions: 3-D: 78.1 × 54 × 11.1cm (2 ft. 6 3/4 in. × 1 ft. 9 1/4 in. × 4 3/8 in.)
Dimensions: 3-D: 5.9kg (13.1lb.)
See more items in: National Air and Space Museum Collection
Credit Line: Gift of C. Stuart Hain, Swarthmore College
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