From the Manufacturer
Designed for estimating board feet in cut log. Marked outside for 10 and 18 foot logs, lower edge consecutive inches to 1/16ths. Marked outside for 12, 14 and 16 foot logs.
Product Description
6'' sections. For logs up to 48'' diameter. White finish. Brass plated mountings, lock joints. Folding hook. Marked outside for 10' and 18' logs and lower edge inches to 16ths. Marked inside for 12', 14' and 16' logs. Blade and markings protected by longer wearing epoxy finish. Doyle scale. 4' long.