Fowler 52-380-024 Flexible Steel Inch/Metric Series Rule with Satin Chrome Finish, 1mm and 0.5mm / 32ths and 64ths Graduation Interval, 600mm L x 20mm W x 0.4mm Thick 600 mm metric rule made of hardened, tempered steel Non-glare satin chrome finish Inch graduations on the front, and 10 mm graduations on the back Microfine subdivisions for 1/32", 1/64", 1 mm, and .5 mm Meets federal accuracy specifications