Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si 1.:gives you the ultimate marking ,allowing the user to accurately mark to the finest millimeter.The vernier scale and main scale were designed to smoothly into the main body and it will fit on to objects perfectly. 2.MULTI-FUNCTION(MEASUREMENT AND MARKING):with one multi gauge caliper you can do 5 different things! From measuring 45 degrees,90 degrees,depth,width to drawing lines. 3.SOMETHING ABOUT VERSATILITY:measuing tool is absolutely versatile.You can insert a straight ruler and this will work as a vernier caliper. 4.EASY-TO-REND THERMAL:Each alumium blade is precisely milled with state-of-the-art equipment followed by sanding procedure and finishing Presses. 5.STABLE YET LIGHT WEIGHT:The blade is made of the anodized aluminum material with 2mm thickness.This stable aluminum tool plate is sturdy yet surprisingly lightweight.It is 30g lighter than regular vernier calipers. Type:Woodworking ruler size:300x100mm Material:metal colour:black Package Contents: 1 * Woodworking ruler Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.