Muntys.
1. Inside span between Main Beams.
2. Length of Main Beam.
3. Length of Brow Tine.
4. Circumference of Coronet.
5. Circumference of Antler at mid-distance up beam.
Each antler measured separately and each feature compared with the opposite member and any difference
placed in a column to be deducted from the aggregate of right and left antler. The Inside Span is then added to get the final total of points.
This was the system used when I had a nice one measured but it failed due to lack of beam and coronet circumference but the criteria may have changed since then.
HWH.