Dimension tool (as in sketchup)

 From:  Frenchy Pilou (PILOU)
7403.6 In reply to 7403.5 
I have not the "little Lines" of extremities!
Must I draw them separately ?
And alas we can't use the Helpers lines for align because of the second click ! :)
Seems Scale inactive! ?

French Version http://moiscript.weebly.com/cotations.html

EDITED: 28 Jun 2015 by PILOU