Description This precision measurement tool is designed for accurate inspection of various defects such as cracks, stains, and scratches. The ruler features a transparent design, allowing for clear visibility and precise measurements. Ideal for quality control in manufacturing, it ensures that all products meet high standards of appearance and functionality. Features -Color:Transparent -Material:Plastic -Size:10.40X6.10X0.20cm/4.09X2.40X0.08in -Precision measurement: utilizes advanced spot inspection ruler and crack width measurement technology to ensure accurate measurement of various dimensions, ensuring precise results -Quick detection: capable of rapidly identifying cracks and stains, helping users to promptly detect issues and take necessary actions to improve product quality -Versatile application: suitable for various industries such as manufacturing and construction, addressing diverse measurement needs across different fields -Durable material: made from plastic material with wearresistant properties, ensuring long-term reliable use of the product -Efficiency boost: enables quick measurement and accurate judgment, saving time, thereby enhancing work efficiencyPackage list: 2 x crack width rulers