Pete, I think the measurements are pretty close. I'm using Rossman boxes and Kelley frames....just the way I ended up doing it.

I think I've had only burr comb on the inner cover on only one small hive that I let get crowded before I added another box. The rest of them are having just sporadic bridge comb between the hives. I don't mind it as it isn't a terrible lot of it...and I enjoy eating some while I work.

Seems when I first started keeping bees I did some mesurements, I'll have to see where I recorded them...I think I took some pictures. But, really, the biggest problem is slowing down to eat the comb.

Ed