Scoring a bull elk is quite similar to scoring a deer but with some added complexity due to the sheer length of those much bigger antlers. The total score number will include the inches in the length of the main beams, length of the tines, the inside spread, and the volume of the antlers. And we'll take deductions for inconsistencies like G1 points that are different lengths.
I'm an official scorer for the Boone & Crockett Club so I've built an array of measuring tools for this task. But you can get it done with some tape, a pencil, string or wire, and whatever tape measure you have available. Enjoy the video, but remember that killing a bull elk is a great achievement, no matter the inches of antler on its head.