Combination Square 20 Inch 360 Degree Rotation Aluminum Alloy Sliding Combination Angle Ruler

Feature: 1. [Combination Square] The combination angle ruler allows for easy marking and quick positioning, simple to operate, suitable for various projects. 2. [360 Degree Rotation] This combination ruler can rotate 360 degree, allowing comprehensive angle measurement and marking, both internal and external angles can be measured. 3. [Aluminum Alloy Construction] The angle disc is made from aluminum alloy, integrally formed with fine workmanship, resistant to falling, wear and erosion. 4. [Tightening Nut] The combination ruler features a freely adjustable nut design, allowing for easy movement of the ruler for measurement. 5. [Dual Scale] The sliding combination angle ruler features dual scales of metric and imperial system, clear and easy