I have asked again to PhyTools to ask on my behalf. Kunbus provide CAD Drawings for the Rev PI Core so I am sure it isn't a problem. I believe it is just a mater of time. I am stuck as well and the device doesn't not have easy corners to measure, I agree!

Is there a CAD Drawing for RevPi Connect+? I can only find the RevPi Core drawings.

Thanks for any information!