This is an old thing. New improved versions are in the link below.

https://www.thingiverse.com/thing:5205102

This is a N Scale switch stand. It requires some cleanup and assembly and gluing after printing but it makes a good lineside detail. You can use the different shape signals included and the throw arm can be modeled up or down. The center post turns as well so you can position it when you throw a switch. It is not sturdy enough to do so on its own.

The photos show a FDM print with .4mm nozzel and .08mm layer height. For better detail use a .2mm nozzel.