For accurate defect detection, the precision measurement tool is your go-to instrument. Whether you're working with metals, plastics, or other materials, this chart helps you measure defect diameters and line widths with unparalleled precision. Use conjunction with a line projection instrument to enhance your inspection process right. Features -Color:Multi -Material:Plastic -Size:10.00X6.20X0.01cm/3.93X2.44X0.00in -Precision measurement: the precision area measure provides exact measurements for a wide range of dimensions, ensuring precise results -Wide range of applications: this sec transparency chart is practical for measuring points, lines, stains, and cracks, fulfilling multiple measurement needs -Robust and durable: made from sturdy plastic, this diameter area measurement chart is designed for performance -Clear and transparent: the precision measurement tool features a transparent ruler, facilitating easy observation of measurements -Effortless use: with its simple design, this defect diameter measurement tool can be used by anyone, regardless of their technical expertise Package list: 1 x ruler