The Measuring Instrument - Building Wall Standard Crack Monitor is a practical and durable tool for monitoring cracks in walls. Made of high-definition board and featuring an easy-to-read measurement grid, this crack monitor provides clear and accurate readings. Its sturdy construction ensures long-lasting use, while its smooth surface adds to its durability.This crack monitor is a simulation crack monitoring device that can monitor the horizontal or vertical movement of cracks on a horizontal plane. It works by recording the opening or closing of cracks in the provided crack log. The cursor moves relative to the calibration scale as the crack opens or closes, making it easy to track the development process over time.With the Measuring Instrument - Building Wall Standard Crack Monitor, you can conveniently monitor the progress of cracks in walls. It comes with 1x crack monitor, providing you with all the necessary tools to effectively measure and track crack development. Please note that the actual color of the product may slightly differ from the picture due to monitor variations, and a slight measurement difference of 1-3cm may occur due to manual measurement.Key Features:Practical and durable designHigh-definition board with easy-to-read measurement gridSimulation crack monitoring device for horizontal or vertical cracksSturdy construction with smooth surfaceEasy-to-use crack log for recording crack opening or closingConvenient tool for monitoring crack development in wallsIncludes 1x crack monitorVariations in color and slight measurement difference may occur