Precise measuring toolThe measuring range of the wood ruler is 0-300mm, the numbers and lines of the double-sided ruler are laser engraved, the graduations are clear and precise, and there are has millimeter graduations on both sides of the ruler, which can provide you with accurate measurement results.Quick Level CalibrationThe woodworking ruler carries the level calibration bubble, which is very suitable for use on multi-angle shots. The position of the bubble can help you quickly calibrate the level line. The included marker tool is ideal for marking and drawing on rough and sturdy surfaces, eliminating the need for a pencil.Adjustable DesignThe woodworking ruler is made up of a 300mm steel ruler and a adjustable square head. The body comes with a standard 90 degree angle and a 45 degree angle, which can be easily adjusted by brass set screws, sliding smoothly, saving measuring time. Holding it for a long time will not cause pressure on your hands.High quality materialThe ruler is made of stainless steel and the body is made of aluminum alloy, with high hardness, not easy to rust and wear, not easy to break , strong and durable.Widely UsedThe spirit level measuring tool is suitable for carpenters, engineers, craftsmen and other groups to make furniture, make models and architectural designs. Professional measuring tools are ideal for carpentry and home improvement projects. Note: The data are all manual measurement, please allow 1-3cm error, due to the light difference and display, there will be some color difference, depending on the physical item received.