1. precision measurement: This crack monitoring recorder enables measurements with a resolution of 0.5 mm (0.02 inches) and a vertical range of 10 mm (0.38 inches). It features an X Y axis grid with 1 mm (0.04') accuracy and a horizontal range of 20 mm (0.79 inches). The tick marking function allows easy tracking of crack position and movement. 2. Advanced crack detection: Our crack monitoring recorder accurately detects both horizontal and vertical movements on flat surfaces. Utilizing precision technology, it tracks changes in crack width or length over time. 3. Revolutionize crack monitoring: manual methods with our crack monitoring recorder. Effortlessly monitor wall crack progression, identify structural anomalies, and plan repairs. Gain insights into building conditions and prevent potential hazards. 4. Improved accuracy: Equipped with a millimeter calibrated base plate and a transparent plate featuring a thin marked cursor, our crack monitoring recorder ensures precise readings. The two plates fit securely together, delivering accurate measurements.