It does work. This one is tough to count, and there can be some “false rings”. This post is 7.5” square and I counted around 123 rings. I did get some back history on these beams. They are all longleaf pine that came from a tobacco drying shed at RJ Reynolds. The guy bought a truckload of them and had them shipped here. These pieces are the leftover cutoffs.
Longleaf is the slowest growing pine in the southeastern US. Now occupy about 5% of their historical range. We’re used as turpentine producers, then clearcut in the early 20th century.