Thanks for the heads-up everyone.

That's too bad but it seems that it should be accurate up to 6 decimal places over since it can be chosen in 'Model Info' 'Units' and 'Length Units'.

Is your statement something that's verified with Trimble?

When rendering smaller scale models and using a curve or arc, the straight line will snap to one of the other endpoints in the arc instead of staying on the original endpoint that I started on. Not sure how to stop this from happening.

I've added some pics to show you what it's doing. The first Pic 1 is of a quarter circle having a radius of 0.05 and has just 12 segments. Pic 2 is showing after I've drawn the line from the bottom right endpoint straight up the blue axis. After releasing the mouse button the bottom of the line snaps to some other endpoint in the arc. : ( Now the line isn't perfectly straight with the blue axis.

I've tried reinstalling sketchup but that doesn't work. I don't remember Pro 2013 having this problem.

I'm using Window 7 with more than enough RAM and hard drive space. I've tried turning off the Hardware Acceleration as well but no change.

Does anyone know why this is happening?

I have drawn it larger by a factor of 10 and then scaling it down, which seems to work, but I shouldn't have to do that.