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Dry Card Compass
Catalogue number:
PH*309671
Inscriptions:
"U.S.C.&G.S. No. 18"
Dimensions:
diameter 5 inches
Discussion:
The U.S. Coast & Geodetic Survey acquired this compass in 1922 and
transferred it to the Smithsonian in 1929. Its needle consists of four parallel
strips of steel enclosed in a brass ring.
Further Information:
Compass
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