Goes without saying. Just scary that I looked at this bull in this picture and gut reaction was "over 50".Unless you know instantly a bull is over 50" easily, you're better off counting brow points. "I was pretty sure he was over 50" is a good way to end up with a fine bull.
They are deceptive for sure and look even bigger in person regardless of antler spread. I can tell you from experience it is very easy, once face to face with a bull, to become enamored with their shear size and get caught up in the adrenaline. The real trick is slowing yourself down to carefully and methodically judge them. Also realize that moose are inherently curious animals especially during the rut and will stand and loiter enabling you to take your time, just as the bull in that picture is doing. He actually circled our camp for over 30 minutes trying to figure out what we were.
Poor man's AntlaLyzer. Works great in the field. Just bring a lap top, a few back up batteries, a camera and SD card, make sure your laptop has the latest and greatest version of Microsoft Paint, and then knock yourself out! I strongly recommend also toting along a mouse and a flat surface on which to operate it.You need The AntlaLyzer. It ranges distance while showing a corrected-for-distance scale superimposed in the the image. The scale lets you get accurate width readings.
It hasn't been invented yet.
Definitely use the brow tine method or for certain over 60." I made a bad call on one. Not fun I can promise you that. Here is another bull that was killed by another friend in camp. Guess away on this one. Obviously with both brows legal it made it easy, but some more practice for you OP. Tough angle I know.