Change default scale / unit

[jlgarnier]

Hi devs!

I'm trying to play with the tool to design a shipping container house. I've found some 20ft and 40ft container models and imported them in my new project (.stl files). Unfortunately, it seems the default unit is millimeter, while the container are respectively 6 and 12 meters long. Thus the rendering is way too much zoomed and unzooming it leads to losing the image as it's probably out of bounds.

Is there any way to change settings either globally or for the imported blocks?

Generally speaking, is there any help to learn about the different blocks and functions?

Thanks in advance fro any clue!