This semicircular protractor is housed in its original wooden fitted case. The case is in very poor condition, but it was originally covered with thin leather and lined with purple velvet. The case is ...
Just call it the great protractor mystery.Channel 4 Action News' Sheldon Ingram reported that nearly 300 protractors have been found in Pittsburgh's East Liberty, Shadyside and Northside neighborhoods ...
IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. See also ID number 1977.0460.01.
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