1Applicable Range: The measuring range of the ruler is 300mm, and it can be used with the limit block to measure angles of 45 degree and 90 degree. 2Durable Material: Composed of stainless steel ruler, aluminum alloy brake block and brass nut, the sturdy construction ensures long service life. 3Convenient Use: Simply move the measuring ruler to the desired position and tighten the nut, the nut adjustment is convenient and practical. 4Accurate Scales: This measuring ruler has clear and accurate scales that are not easily worn, improving measurement accuracy and efficiency. 5DIY Woodworking: This combination tool is widely used for woodworking measuring, scribing, and marking, saving time and improving efficiency. 1 x Steel Ruler 1 x LimitBlock