In model space, scale should always be 1:1. If you have a scale of 10:1, you probably have a unit mismatch. Like you imported a DWG with units as meters, when it was exported with Centimeter units.
In layout space, for print output or for export, you can define the scale for the output.
If your units do mismatch, you can change the unit to the originally export unit in the options menu. When asked to scale the whole unit, answer with no. This will just reassign the new unit without scaling the scene. If you need a different unit, you can change the unit but let rhino scale the file.
If you already are in your desired unit, you can also use 3D scale with the corresponding scale factor (0.1 in your case) and scale around the origin point.
Or you can always reimport/open the file and use the correct unit when importing. Then adjust units in Rhino as you wish.