【Material】Aluminum alloy housing, surface treated with high polymer hardness, wear-resistant and durable. And the marking gauge uses paper clips, refill leads, needles, pencils, etc. 【Hardening process】The cutting tip is hardened and has precise lines, which can easily cut the wood fiber to prevent the grain from falling off< /p> 【Clear scale】The scale is clearly visible, easy to measure and doubles as a depth gauge, quick and easy to use < p>【Wide application】The woodworking marking gauge has a wide range. Depending on the application, it can be used for various materials such as ceramics, iron, acrylic, wood, etc. 【Specifications】Measuring range: approx. 0~120mm/0~4.7in, measuring accuracy: approx. 1mm/0.04in, surface treatment: anodizing, size: approx. 210mm/8.3in, 138mm/5.4in, size: approx. 52 mm/2 inches