Features: The two sides of the ruler have two different scales, metric and imperial. You can choose the one you want to use. 0~300mm/12inch measurement ranges is neither too long nor too short, which can meet most of the measurement needs. Made of stainless steel and aluminum alloy material, with the characteristics of not easy to break and bend, has a long service time. With a ruler limit block to precise positioning and makes your work more efficiency. This tool is indispensable whether you are a professional woodworker or a novice hobbyist who is just starting.