[Stainless steel ruler body] Made of stainless steel, the scale is clear and precise, comfortable texture, makes marking much less time and much more accurate. [Precise operation] 1mm, 0.5mm , 0.25mm, each position of the scale has finely marked holes and grooves, which makes the operation more precise. [Easy to use] Flexible and easy to use. Let the layout do what you want, satisfying all of a carpenter's square wood layout needs. Specially designed for positioning and marking of wood mortise, convenient and precision. [Multiple functions] Realize multiple functions, including horizontal line, vertical line, long line, short line, parallel line and the line at right angle, meeting your various marking needs. [Packing list] Comes with the mechanical pencil and a box of 0.5mm high hardness pencil leads, it will not be easy to break and will work for a long time. Specification: Item type: Scribing ruler Material: stainless steel Color: Silver Diameter of the pencil: 0.5 mm Measuring range: 0-300 mm (optional) Package contains: Packing list 1 x scribing ruler 1 x pencil 1 box of pencil lead Feature: 1. There are micro-fine marking holes and slots. 2. Precise, versatile and easy to use T-type ruler. 3. Locate your sharp pencil or scribe with absolute precision. 4. Instantly mark your position with zero uncertainty, zero parallax, and zero eye strain. 5. Specially designed for wood mortise positioning and marking, convenient and precision. Note: This does not include other things, the color is based on the first picture, and the other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow deviation. Thank you!