This T type ruler is made of high quality stainless steel, comes with clear and accurate scaleCNC machining with comfortable texture, makes marking much less time and much more preciseEach scale position of 1mm, 0.5mm and 0.25mm has finely marked holes and grooves, which makes the operation more preciseLet the scribe do what you want, flexible and easy to use, meet all carpenter wood scribe needsThis tool is designed for woodworking mortise positioning and marking , convenient and accurate Specification: Item Type: T-type Ruler Material: Stainless Steel Purpose: Wood Marking Measurement Measuring Length: Approx. 300mm/11.8inch Accuracy: approx. 0.25mm/0.01inch Package List : 1 x T-type ruler 1 x mechanical pencil 1 x charging box