The chest card measuring film ruler is a versatile tool used for comparing and estimating the size of defects such as cracks and scratches. Its high precision allows for detailed measurements, which are crucial for maintaining quality standards. To use, align the ruler with the defect and use the marked scales to determine the exact size, ensuring accurate and consistent results every time. Features -Color:Multi -Material:Plastic -Size:10.00X5.70X0.01cm/3.93X2.24X0.00in -Precision measurement tool: the chest card gauge film ruler delivers highprecision measurements, making it indispensable for tasks requiring exact dimensions. -Comprehensive : this tool measures dot gauges, line gauges, spots, and cracks, making it versatile for inspecting various surface defects. -Transparent scratch ruler: the included transparent scratch ruler allows for clear and accurate comparison of surface scratches, improving inspection quality. -Reliable and : built with plastic materials, this tool ensures durability and reliability, making it a dependable choice for repeated use. -Simple and convenient: its design makes it easy to use in different work settings, providing convenience for both professionals and hobbyists Package list: 1 x Flaw Detection Film Ruler