National Museum of American History

This hollow white plastic instrument has paper scales. One side has a 39-inch ruler, divided to 1/8" along the top and to 1/2" along the bottom. Alternate pairs of half-inches are colored orange on the bottom scale.

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National Museum of African American History and Culture (NMAAHC)

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Smithsonian National Museum of American History : Washington DC

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National Museum of American History Collects History Related to Lesbian, Gay, Bisexual and Transgender History

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A People's Journey, A Nation's Story

Reflections on the Opening of the National Museum of African-American History and Culture