Precise Reading: Square T-angle design, can measure 45 degrees, 90 degrees, 135 degrees and draw lines. The limiter is marked with a scale with a resolution of 0.05 mm for a more accurate reading.The stopper is detachable and you can use other components to completely customize the caliper depending on the project. Easy To Use: From 45 degrees, 90 degrees, depth, width to draw lines.You can measure the thickness and depth of the object like any other calipers.You can also check the angles with a combination miter and t-square.You can mark the object using the 'main scale as a ruler. Clear Reading: The body of the ruler is composed of a T-shaped ruler and a stopper.The stopper and T-shaped ruler are made of aluminum alloy. The surface is sanded and black anodized, wear-resistant, rust-resistant and comfortable to touch. Angle measurement: The combination design of T ruler and limit not only realizes the function of ordinary vernier caliper, but also increases the function of angle measurement and marking. Ergonomic Design: The measuring range of the T-type head is 0-100mm, the measuring range of the main scale is 0-210mm, and the upper and lower two rows of scales are handy for measuring width and depth. The ruler's lightweight body is ergonomically designed to reduce pressure on the elbow or wrist. Specifications: Type: Woodworking Multi-Gauge Ruler Material: anodized aluminum Suitable: Woodworking DIY Measurable: 45 degrees, 90 degrees, 135 degrees of angle and line T-Type Head measurement range: approx. 0~100mm/0~3.9in Main scale measurement range: approx. 0~210mm/0~8.3in Size: approx. 232mm/9.1in 100mm/3.9in 25mm/1in Package Included: 1* T-Marking Ruler