[Multifunctional Marker Ruler] The carpenter square tool can be used for measuring, scribing, marking angles, etc. A ruler is versatile! Allowing you to finish work smoothly and no longer need to change tools frequently. [Quick Positioning Angle] 10 common fixed angles can be marked quickly without reading. Every 1cm on the ruler is designed with holes for tracing. Go well with the scribing needle, you can quickly locate the angle you need. [High Precision] The 12-inch aluminum alloy angle ruler adopts laser scale, which is clear and wear-resistant. Also easy to read. The ruler will not deform or rust even after long-term use. Guarantee the accuracy and authenticity of your measurement results. [Easy to Measure] The sturdy aluminum body, also with a unique retractable metal rim support, is very useful for stabilizing the handle on any surface. You can avoid measurement errors due to jitter. The L-shaped shape is also perfect for holding your hand while working. [Wide Use] Our protractor can be used for multi-dimensional measurement, plotting, layout, etc. An ideal tool for carpenters, house builders, DIY enthusiasts. Now let's start your infinite creative journey.