Problems with importing STL files

When I import STL files generated by Sketchup, the dimensions are incorrect. I have compared the original model created in Sketchup with the STL files generated and the dimensions in the STL file are dramatically smaller that the model itself. Can anyone help with this?

To what did you set the units in the import Options? How does that compare to the units in the export?

Thank you

since I posted my question I saw some other posts and they mentioned the same thing you have. When I switch to inches everything looks OK. I had not noticed the option menu. Thanks again.