And you have some tricky dimensions tools by Max Smirnov if really that is missing for you! ;)

http://moi3d.com/forum/index.php?webtag=MOI&msg=7403.103
Here in French but you have the same in English...



or volumes always by Max Smirnov!
http://moi3d.com/forum/index.php?webtag=MOI&msg=7421.71