1、Made of engineering environmentally friendly plastic, thickened and hardened, more durable 2、The ruler is made of stainless steel and is processed by high-frequency quenching. The hardness of the ruler is high. 3、Using laser engraving to measure the scale, the readings are clear. 4、With a micro-moving roller, the measurement is quick and convenient, and the ergonomic design is more comfortable and free to measure. 5、The conversion chart engraved behind the ruler makes it easier for you to calculate. Features: Made of engineering environmentally friendly plastic, thickened and hardened, more durable The ruler is made of stainless steel and is processed by high-frequency quenching. The hardness of the ruler is high. Using laser engraving to measure the scale, the readings are clear. With a micro-moving roller, the measurement is quick and convenient, and the ergonomic design is more comfortable and free to measure. The conversion chart engraved behind the ruler makes it easier for you to calculate. Specification: Material:304 Stainless Steel Measuring Range:0~150mm/0~6in Resolution: 0.01mm/ 0.0005in Accuracy:+- 0.01mm/ +- 0.001in Type:Slap-up/Low-end(Optional) Package List: 1*Vernier Caliper 1*Plastic Box 1*Screwdriver