Lufkin 524N Wood Folding Rule, 4' x 5/8"Highlights: Width In x Length Ft : 5 8 x 4 Doyle Log Scale Wood Material Designed for estimating board feet in a cut log Graduated inches to 1 16ths lower edge Outside markings for 10 and 18' logs; inside markings for 12, 14 and 16' logs WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www. P65Warnings.