Your choice of models: English Model - Marked both sides, both edges. Graduated to 1/16ths both edges; 16" stud centers marked in red. Regular outside markings. 5/8" x 6' 6' x 5/8" Metric Model - Graduated in millimeters with centimeter and meter markings on metric side: English side marked to 1/16ths Lufkin Red End Folding Rule - Standard Models luforustmo$10.95, 6/$59.70Model: 066 - English062CME - Metric Need more information? Please feel free to contact us at 1-800-592-6940 - Ask for Extension 547 or Internet Sales.