[Sturdy and Durable]: This stainless steel ruler set is made of high quality 304 stainless steel, which is strong and rustproof, soft and not easy to bend; the black positioning part is made of high quality bakelite, CNC machining, comfortable texture, durable, long life. [200mm length]: This T-shaped hole ruler has a measuring range of 0-200 mm/0-7.87inch, specially designed with positioning and marking, easy to operate, high marking precision, making woodworking/DIY easier and reducing deviation. [Precise scale]: The surface is anodized, the scale is clear and precise, easy to read. Each specification has 3 sets of holes with different precision (0.25/0.5/0.75mm) to choose from, and is equipped with clearly marked holes and grooves to make the operation more precise. [Flexible and convenient to use]: This multifunctional ruler can draw horizontal, vertical, long, short, parallel and right angle lines; the surface is non-reflective, so even tired eyes can mark accurately in a dimly lit starting point. [Multifunctional Marking Ruler]: The T-shaped ruler has a moderate size and is easy to to carry. It is suitable for positioning and marking carpentry tenons and tenons. It can be used in workshops, home improvement, tool boxes, cabinet makers, carpenters, and can meet the positioning of all carpenters and carpenters.