Dimension tool (as in sketchup)

 From:  Frenchy Pilou (PILOU)
7403.106 In reply to 7403.105 
@Max (imum)
You don't know perversity of some geometric's maniacs! :D
So my version will be customized with funny thing max="14" (line 282) :D

EDITED: 14 Sep 2015 by PILOU