Product name: saw table adjustment ruler Size: as shown Specifications: Metric: The division value is 1mm and the measuring range is 80mm British system: The division value is 1/16inch and the measuring range is 3inch Smooth sliding and precise locking: The measuring tool has a slider that moves smoothly and freely along the scale. Once you choose the ratio value you want, it locks in a safe place to ensure accurate positioning every time. Accurate reading: The altimeter has a clearly visible standard precision scale, providing a greater height measurement range than other meters on the market. Good for ensuring accurate measurements in your woodworking works. High quality material: CNC aluminum alloy, anodized, strong and wear-resistant. The scale is easy to read and the design stands up to frequent use without fading. Versatile: The woodworking altimeter is a truly versatile tool that can be used for a variety of applications, including adjusting, measuring and positioning the height or depth of a table piece or bench drill. Increase the efficiency of your workshop with this versatile gauge. Compact and portable: Its lightweight and portable design is designed to enrich your woodworking experience by providing reliable measurements and ease of use, making it an indispensable tool in any workshop environment.