As most of you know from my postings, that I am scratchbuilding a complete interior of a Panzer IV J in 1/72nd scale. So far I have the entire turret interior is finish including the turret floor and support tubes. My question to you guys is this, I would like to know some of your comments or opinons on how to level the turret onto the turret floor?

What I mean by this is, I have built the turret floor and it's support tubes separate from the actual turret and I now need to put them together.

The problem I am having is that I can't seem to get both the turret and it's floor level enough so that I can cement them together so that it looks good and not tilted. I hope you guys understand my dellema. Is there a way to solve this? Is there an actual bubble level for models?

Please Help!!??