Measurements in VR

VR tool bar

for the Architecture company, sometimes we need to show to the client what we have setup in the revit or sketchup, so we export the model to .exe file. and as a result the client may have a interest in asking the length(or the width,height) of the desk, or the distance between the ceiling and the ground, but i think for a person he might be not able to remember every detail, so if we have a feature to simplify this problem, let the client to "solve" the problem himself, he can measure what ever he wants to know.