From the record
“The Meades Ranch Triangulation Station is a survey marker in Osborne County in the state of Kansas in the Midwestern United States. The marker was initially placed in 1891.”
Wikipedia article Meades Ranch Triangulation Station, CC BY-SA 4.0.
One of 7 National Register listings published here for Osborne County · listed in 1973 · category: Site · built in 1913.
Sources: the Wikipedia article · the National Register database, National Park Service