Engineers Rule Construction Wood with Brass Slide Strike Plates Brass Plated End Caps Riveted Brass Lock Joints Graduation Type Standard Graduations 1/10 ft 1/100 ft 1/16 in Length (in) 72 in Length (mm) 1 800 mm Width (in) 5/8 in Width (mm) 15.9 mm Abrasive Resistant Epoxy Finish Markings Regular Outside Markings Graduated Slide 16 in Stud Centers In Red