I really enjoying using Coombs forms. I did not know that that all of their form measurements where meat measurements until I but my last order in. my normal way of measuring is tight behind the ears with the skin still on, I took off an inch and i think I will be fine. Well I got a euro in the day and I thought I would just take some simple mental data to see how much of a difference there was. Well on a small year and half six point that was killed 12-1-2012 he measured 15 3/8 tight behind the ears, after skinning him out I took a meat measurement and got 13 1/2, Almost two inches I was kinda shocked. So can I say that a two inch difference is standard from skin measurement to meat measurement?