Panel Control Easy with Volume, density, Material, height, weight

Hellow Mr,
i only use solids material, is very hard calcule volume, weight etc.

So, we need an panel easy to it, click and show .

Panel to put material how, aluminum, steel, copper, rock, wood,

If i did an block of steel, so i need knows weight… of course ! but it is hard calcule in sketch up now !

And an things importants, it upgrade, is easy, programmes enginiers of Skecth did it in some hours…

HELP ME A LOT WITH IT MR…

BIG IMPROVE