Field measuring is the one and only thing that I don't like about being a Designer, but I know how critically important it is to have accurate measurements. So, I just purchased the Structure Sensor to go with Canvas IO.  I can't wait to try it out.  You have to see this video:  https://canvas.io/sketchup. I am hoping that this will save me time when field measuring.

This is the sensor that will attach to my iPad so that I can scan a room. I'll let you know how it goes.