HIGH QUALITY AND DURABLE: The woodworking T-shaped ruler is made of high-quality aluminum alloy, the surface is anodized, the structure is firm, the hardness is high, rust-proof and durable. life is long. It is processed by precision equipment. EASY TO USE: The marker is precise, versatile and easy to use. Simply find the hole corresponding to the scale, insert the pen into the hole and draw the desired line. AUXILIARY PLOT: The auxiliary tracing tool, a T-shaped ruler with markingsprecise, can help you draw a perfect horizontal line while sliding the ruler along the working edge. PORTABLE DESIGN: Portable hole ruler, with twist resistance and durability. Simple structure, simple operation, high precision and wide application range. APPLICATION: The product size is 79x58x9mm/3.11x2.28x0.35in. This auxiliary marking tool is very suitable for carpenters and DIY enthusiasts.