To help resolve questions while counting, roll the increment core over to look at all sides. On a cut face, look at rings around the complete surface to help resolve ring counting questions. You may improve your accuracy by using a hand lens and marking rings with a pencil while counting. Watch out for compression wood 1/2 rings.
6. Correctly Account for the Last Ring
Make sure your method of counting rings takes account of the last ring that is pressed against the inner bark. The method of ring counting that is shown in the diagrams in this document is as follows: