Hardened Stainless Steel Satin Chrome 6"/ 150 mm Imperial/Metric rule. It has a zero glare satin chrome finish which makes it easy to read and will prevent corrosion. Markings are precision photo etched and then black filled for easy readability. The graduations shows 32nds and 64ths on one side and mm and .5 mm on the reverse. Both long edges and ends are ground flat and straight. Accuracy conforms to Japanese Industrial Standard (JIS) B 7516 Grade 1. This is the same type we ruler we use in our busy shop for action measuring and general workshop duties.