A really useful Lumber Calculator Book. It calculates piece counts of 1×4 to 8×8 from 8ft to 22ft lengths.
Harvest Your Own Lumber is a concise and invaluable reference that provides easy-to-follow guidelines and critical advice for every stop of harvesting and converting your own lumber.
Measure board feet for saw logs, this folding ruler is good up to 48″ diameter form 8′ to 18′ in length.
Be able to compare your log scaling with the Doyle, Scribner, and International scales all on one scale. These 3 scales on 1 tool can help you buying and selling logs.