My timber profiles are too small to see IE 200mm x 20mm How can i fix this

I am using the standard millimeter template but without vooming on a massive scale I am unable to see my timber profiles. Any suggestions on how to solve this. Cheers jac

The sketchup workspace is a basically infinite size, you need to zoom into your work if you have somehow zoomed out.
Zoom Extents will automatically fill the screen with your model.

You cannot see the Great Wall of China from the International Space Station. The default view the standard empty millimeter template shows for me is about 120 meters across so a 200 x 20 mm object would show, at best, as a dot. You need to zoom in.