Two-board crack monitor design - The instrument consists of two boards that can be easily secured together on a flat surface. The base plate is calibrated in millimeters, and the transparent top plate features a thin line cursor with a crosshair for accurate readings. Precise movement monitoring - This is a precision instrument that can monitor horizontal or vertical movement of cracks on a flat surface. It enables you to detect changes in crack width and length over time. Crack Monitoring Record - The Crack Monitoring Record transforms manual crack observations into a trackable record. Easily track the evolution of wall cracks over time, detect structural abnormalities, and plan repairs. Gain insight into the condition of your building and prevent potential hazardous situations. Simple setup and reliable use - Simply place the instrument on a flat surface and secure the two pieces together for precise measurements. This provides a safe and reliable crack monitoring solution for your home or building. Use scenarios - Post seismic or tremor monitoring: Install on a cracked wall to monitor ongoing movement after earthquakes or strong vibrations, helping determine safety and necessary repairs. - Foundation and basement monitoring: Use on foundation or basement walls during settlement or construction to track movement over weeks or months. - Routine building maintenance: Regularly monitor aging structures for crack progression to inform timely maintenance and safety planning.