Graduation: mm - mm / 8th + 16th Measuring range: 300 mm / 12 inch Square: 110 mm x 90 mm x 17.5 mm Cross section (blade): 25.4 mm x 1.8 mm with protractor and center head for carpenters. wood workers and mechanics. etc. ; stainless steel blade. etched graduation in mm/inch. double-sided ; square head. protractor and center head made from alloy casting. powder coated ; smoothly processed surfaces ; with steel scriber and vial made in taiwan