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.

Black History Month at KCC: Take a virtual tour of the National Museum of African American History and Culture - KCC Daily

Guide to the National Museum of American History

Welcome to the National Museum of American History

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National Museum of American History Reviews

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National Museum of African American History and Culture – Museum Review

Review: The National Museum of African American History and

National Museum of American History in Washington DC - Discover the Wonders of American History - Go Guides