This precision measuring tool set includes a transparent ruler, flaw detection chart, and crack comparator, designed for accurate measurement of diameters, line widths, and defects. The clear design ensures easy visibility, making it ideal for various professional and industrial applications where precision is crucial. Features -Color:White -Material:Plastic -Size:10.00X6.20X0.01cm/3.93X2.44X0.00in -High precision measurement: utilizes advanced precision diameter measure and transparent measuring ruler technology to ensure accurate measurements for various dimensions -Clear visibility: made from high transparency material, making it easy to identify defects such as spots, cracks, and scratches, thus enhancing inspection efficiency -Versatile application: suitable for various industries including manufacturing and construction, addressing diverse measurement needs different fields -Portable design: lightweight and easy to carry, allowing for professionalgrade inspections anytime and anywhere, ideal for outdoor operations -Defect comparison card: comes with a comparison card to quickly assess defect levels, simplifying decisionmaking and improving the standardization of production processes Package list: 4 x precision measurement tools