Please note, the log scales can be used to estimate yield from logs. I normally saw 20 to 50% more than the Doyle log scale shows on logs 20" diameter and under. My yield using the International scale is very close if the logs are straight.
An online calculator to predict wood movement. Very useful if you use air dried wood and want to know how much it will shrink when brought into a climate controlled house. Must have a moisture meter to find the initial moisture content of the wood.