Batteries included.

My brother wanted to pitch in an make the battery racks,  so I measured out some specs and he wielded them up.  Here's the first rough draft of them

So I got them and test fit the batteries into them to make sure; I could in fact measure the batteries correctly.

 The answer is... Yes I can measure things correctly.  I've seen his work before, so I was more worried I'd start converting metric to English and horse it up something awful.

But as you can see, even the pyramid to power is spot on!