1、[Dual Scale] This woodworking marking gauge allows for switching between metric and imperial scales by simply disassembling and flipping the ruler body to suit your measurement needs. 2、[Versatile Compatibility] Compatible with various marking tools such as pencils, ballpoint pens, refills, and fountain pens with a diameter less than 11mm (regular markers are not recommended, use blade or drawing pin instead). 3、[Concealed Back Hanging Stand] The concealed back hanging stand ensures accurate positioning and marking, making it ideal for woodworking projects that require accuracy. 4、[Easy Adjustments] The knob design allows for quick and easy adjustments to the marking position, simplifying the process of setting up your measurements. 5、[Aluminum Alloy Material] Constructed from sturdy aluminum alloy, this woodworking marking gauge is built to last, providing long lasting durability.