either use a pencil or make an imaginary line along the top edge of the main beam at the base of the points. Measure the points from there to the tip. Start on the outside of the mainbeam down at the burr and measure along it to the end (thats the mainbeam) its a bit more complicated than that but close enough. Then measure the narrowest mass between the eyeguard and the base and then the next point....so on for a total of four measurements. If you are lacking the alst point measure 50% of the way to the end of the point.....
Measure the inside of the mainbeam from the widest point, thats your inside spread... ADD EM UP. (Add 35% and you have your huntwa score) (that in paranthesis was a joke)