CC0 · no rights reserved
Level
From the collection of National Museum of American History. Free to download, adapt and use — no permission needed.
About this work
Patent model for Riley Root, “Level,” U.S. Patent 26,621 (Dec. 27, 1859). Riley Root (1795-1870) was a teacher, surveyor, inventor, and early settler of Illinois. This brass surveyor’s level has an arc with a 3-inch radius, and is graduated by degrees. The inscription reads "Riley Root."
National Museum of American History’s own descriptionCredit lineLevel. National Museum of American History. CC0.
