Combined Level, Grade, Distance, and Elevation Finder.
Creation Information
Context
Audiences
patent as a primary source within our collections. Researchers, educators, and students may find this patent useful in their work.
We've identified thisContact Us
Subjects
Mapped Locations
Combined Level, Grade, Distance, and Elevation Finder., patent, December 19, 1905; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth509471/: accessed May 3, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.