The file 'Nyctograph 3D Printer Model' is (stl) file type, size is 22.5KB.
Nyctpgraph for night writing, invented by Lewis Carroll.More info at https://bandini.medium.com/el-nict%C3%B3grafo-de-lew-4b4f4ab8e9e5
https://www.youtube.com/watch?v=gjoaxIZtTdE