Features ALUMINUM ALLOY: This line gauge is made of excellent aluminum alloy, which is resistant to corrosion and oxidation, can be used in various environments. CLEAR SCALES: The woodworking center scriber has measurement scales that are clear and accurate, ensuring reliable scribing and marking. 45 90 DEGREE ANGLE: This woodworking gauge supports 45 and 90 degree angle scribing, for circular and square surfaces, convenient and practical. FOR CENTER SCRIBING: This center scriber is used to mark the center on the disc and shaft, for marking the center line, finding the center point, etc. APPLICABLE RANGE: The measuring range of the ruler is 100mm, with a wide range of applications, used for woodworking projects, furniture installation, etc. Specification: Item Type: Center Scriber Material: Aluminum Alloy Range: Approx. 100mm / 3.9in Minimum Scale: 1mm Use: For woodworking Measurement Function: Draw the center line of a circle, find the center of a circle, draw a 45 degree line, and draw a vertical line Package List: 1 x Center Scriber Package List 1 x Center Scriber