it’s pretty that design and modeling we do use the tape measure for details and for a perfect and precise lines , however the tape measure in sketchup only make measures of line , where we need an update for the tool in order to be able making some cercrles and arcs like AutoCad do as well
I assume you are writing about circular and arced guides?
Are you using translator? If not, please do it, some things don’t make sense on your post.