How to have a scale bigger than 1 (more detailed)

[GabrielMesa]

I'm trying to create a map that shows the change in position of a GNSS station, hence the movements are very small (in the mm) and a 1:1 scale isn't really big enough, I would like to have a more fitting scale like 1:0.1 (or 10:1 if you will) on my layout.

Is there any easy way to accomplish this? thank you for your time

[jcarlson]

The maximum scale of the map seems to relate to the spatial reference, though where these limits are stored I do not know.

In EPSG 3435, which is a state plane projection in Illinois, I can zoom in to 1:0.04 (25:1). But in other projects when I work in another projection, I cannot go past 1:1.