1Main Function: This circle center finder tool can be applied for marking the center on discs and shafts, center scribing, 45 and 90 degree scribing, locating the center of a circle. In addition, there is a ruler that can easily measure a line length, making it a nice choice for woodworking. 2Aluminum Alloy: This scriber marking tool is made of excellent aluminum alloy, which is lightweight and sturdy, with wear resistance, can last for a long time. With special process scale to ensure clear and accurate reading, convenient in measurement. 3Convenient to Use: This woodworking scribe tool can be applied to measure the center point and mark soft metals or wood. Accurately and efficiently find the center of stocks, randomly draw 2 lines, the intersection point is the center of the circle. 4Wide Applications: This woodworking marking tool can draw 45 and 90 degree line, also can be applied as a locating block and a T ruler applied to draw vertical and parallel lines on the workpiece. Suitable for scribing center line on circular, and right angle, for various woodworking projects. 5Accurate and Practical: The center scribe gauge has imperial scale markings, a range of 4.2 inch, and a minimum scale of 0.1 inch. With exquisite workmanship, the woodworking center scriber has a glossy appearance, ensuring secure and reliable use. 1 x CenterScribeGauge