This post heading is misleading, it looks more like a question rather than a 'How To'.
It might be an idea to rename your post with the prefix: 'Tutorial'. As in:
Tutorial: How to Change the Sketchup Measurement Unit
You might also mention that plugins are available to change units on the fly. Very useful, for example, when reading boatbuilding plans.
I am curious as to why you wished to share these very basic settings. Is this something you have had difficulty with?
Cheers, Baz