Features: Made- of top Aluminum-alloy quality and made- by CNC-prcess.The surface- is anodized, wear-resistant, rust-proof, thick yet light enough to not be clunky. Fine notch- is in the end of the ruler- to place a pencil. The beefy stop is secured- with two thumb screws, help- stop and fix at any position, effectively prevent slippage. With Inch and Metric Indicators on both sides, this steel ruler has clear and accurate scale, easy to read.. All four edges feature an engraved- scale incremented every 1 or 16th or 1mm depending on style-. The numbers- are engraved- by laser-, which can be used for tens of thousands of -times without wearing out. The side is marked- with 1 or 4, 1 or 2, and 3 or 4 depth measurement units- to meet a variety of measurement needs-. When you need vertical measurement, slide the stop off the end and insert it into the cut-out blade- and then your rule has a perfect stand to keep it upright. Specifications: Material: aluminum-alloy Length: approx 18cm or 7-inc, 23cm or 9-inch, 33cm or 13-inch Note: Please allow 1-3cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 3xPocket Rule