National Museum of American History

This 51-1/2" wooden T-square has a scalloped top piece attached to the handle by 6 brass screws. A hole at the end of the handle is for hanging the instrument. It has no markings, but paint and ink stains on the handle indicate it was heavily used.

National Museum of American History Pictures: View Photos & Images of National Museum of American History

Five Facts about the Smithsonian's African American Museum of History and Culture - New Orleans Museum of Art

America on the Move National Museum of American History

Three sculptures from acclaimed artist Elizabeth Catlett coming to the National Museum of African American History and Culture

National Museum of American History in Northwest - Tours and Activities

Explore Who We Are at the National Museum of American History - MidAtlantic Daytrips

Inside the Smithsonian American History Museum's Pop Culture Exhibit

Smithsonian National Museum of African American History & Culture Reviews

David Adjaye on the National Museum of African American History and Culture