Spacing between bodies?

[B3nn]

Ok say I have a few different bodies and I want to keep them different, but specific distance from each other or other parts.
Like distancing shelves away from each other without using the pattern tool.

I know I can add a plane in for a reference, but is there any way to distance the surface of one object away from the surface of another object?

[SCALEMODEL]

I covered this in this post.

But if you setup Variables and use either Align or Translate tool it will keep the same distance when you change the variables.

ALIGN TOOL HAS LOST IT'S MIND and mine

With variable now 2 parts will perfectly stay aligned even when you change dimensions through the variable. Also when you change the variable the gap stays the same distance.