Features: The TS12 imperialmeasuring ruler is made of durable aluminum alloy with an anodizedsurface, ensuring long lasting corrosion resistance. This compact and portable woodworking t square ruler features precise lasers etched markings that will not wearoff, making it idealfor marking and measuring on woodworksurfaces. Designed for woodworking enthusiasts and professionals, the TS12 ruler is a must have tool for accurately marking and measuringcircular, square, and right angles lines, as well as locating centerpoints on curvedsurfaces. Whether you're working on carpentry projects or diy crafts, this versatile ruler is perfect for various woodworking applications, providing accurate measurements and ensuring 90 degree perpendicularity with two positioning pins and four screws. With its simple yet practical design, the TS12 imperialmeasuring ruler helps you achieve precise measurements and markings effortlessly, making your woodworking tasks easier and more efficient. Specifications: Material:Aluminium Alloy Size:Approx.355x44x200x43mm/13.97x1.73x7.87x1.69inch Two locating pins+four screws are lockedand fixed to ensure 90-degree verticality. 1mm precise hole, 1/16 precise hole spacing. Package Includes: 1x T Type Scriber Ruler note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.