Product Details Ⅰ. High precision measurement ensures accurate detection of flaws in diameter and line width, meeting quality control needs in manufacturing Ⅱ. Versatile application allows measurement of points, lines, stains, and cracks, catering to diverse measurement requirements Ⅲ. Durable plastic material offers wear resistance for long-term use in various working environments Ⅳ. Transparent design provides clear visibility, enabling easy observation and recording of measurement results Ⅴ. Simple operation makes it accessible even for users without practical knowledge, ensuring effortless use Specification Ⅰ. Color: Multi Ⅱ. Material: Plastic Ⅲ. Size: 10.00X6.20X0.01cm / 3.93X2.44X0.00in Package List Ⅰ. 1 x ruler Warm Tips Ⅰ. Place the transparency over the material to measure and compare imperfections effectively Ⅱ. Keep the tool away from sharp objects to maintain its transparency and accuracy Ⅲ. Store in a dry and flat place when not in use to prevent deformation