1、[Measurement Tool Set] This set includes a triangular gauge and a tenon caliper, perfect for measuring tool height, table saw height, and more in your woodworking projects. 2、[Accurate and Standard] The tenon caliper is made with pre fabricated convex and concave guide rails, ensuring it conforms to the standard sizes used in furniture manufacturing. 3、[Metric and Imperial Scale] Equipped with both metric and imperial scale markings, providing accurate readings and catering to diverse measurement needs. 4、[High Precise] Thanks to its high precise design and clear calibration markings, this set allows for precise and reliable measurements in woodworking tasks. 5、[Sturdy Aluminum Alloy] Made from aluminum alloy, this measurement block set is resistant to deformation, corrosion, and wear, ensuring practical and long lasting usage.