measuring ruler is an essential instrument for inspecting and measuring cracks. Its precise scale allows for accurate assessments, helping to identify potential issues. The lightweight and portable design make it ideal for inspections. Features -Color:Multi -Material:PET -Size:11.00X7.50X0.10cm/4.32X2.95X0.04in -Versatile measurement tool: this flaw detection gauge is suitable for line gauge applications, providing a comprehensive solution for different measurement tasks -High precision: made from PET material, this flaw detection gauge ensures accurate and reliable measurements, delivering high precision for defect detection -Portable design: its compact size makes it easy to carry, allowing for convenient use in various settings such as classrooms, offices, laboratories, and homes -Easy operation: featuring simple operational steps, this flaw detection gauge is userfriendly and allows for quick and efficient size detection for various applications -Wide range of applications: suitable for professional, and research environments, this flaw detection gauge offers versatility and convenience for a wide range of uses Package list: 2 x flaw detection gauge