Accurate Measurement: Crack Gauge is ideal for expert work. You can accurately measure cracks in the range of 0.1mm to 2mm. It can accurately track cracks, alignments and thicknesses. Ruler provides you with excellent measurement accuracy. Package Content: Contains 2 pieces ruler with high-resolution screen printing. Each ruler is equipped with 3 different measuring scales to cover a variety of applications. Transparent: Simply place the crack gauge on the object or crack to be measured. Thanks to the transparency of the ruler, you can perfectly capture the width of the crack and accurately mark the positions. Designed for Portability and Ease of Use: is specially designed to meet your lifestyle and needs. With a thickness of 0.5 mm, it is very sturdy and has a stability similar to that of a credit card, so you can take it anywhere. Anyone can easily use the , regardless of their experience. Versatile: Whether you are a construction expert, an art restorer or a DIY enthusiast, will meet your needs. Crackmeter is a multifunctional and reliable addition to your toolbox, providing you with the precision needed to complete your tasks safely. Note: The data are all measured manually, please allow an error of 1-3 cm due to differences in light and display, there may be color differences, please refer to the actual item received.