‎Plastic Advanced Dual-Axis Crack Detection: Monitor structural shifts with ±1 mm (±0.04") X-Y axis precision and ±0.5 mm (±0.02") discrimination for accurate crack evolution tracking Wide Measurement Range: Capture horizontal displacements up to ±20 mm (±0.79") and vertical movements up to ±10 mm (±0.38") for comprehensive crack monitoring Durable Polymer Construction: High-grade weather-resistant material with a laser-etched grid ensures long-lasting clarity and easy readability in harsh environments Effortless Installation & Use: Align crosshair center over cracks and secure with adhesive or screws (anchors included) for instant monitoring. Ideal for walls, foundations, and concrete surfaces Portable Multi-Directional Gauge: Compact lightweight design enables two-directional tracking (horizontal/vertical) for onsite inspections, engineering surveys, and DIY projects Track structural integrity with precision using our professional-grade Crack Monitoring Gauge. Engineered for engineers, contractors, and homeowners, this dual-axis measurement tool features a laser-etched grid with ±1 mm (±0.04") graduations on X-Y axes and ±0.5 mm (±0.02") discrimination, delivering unmatched accuracy in detecting crack expansions or contractions. The ±20 mm horizontal and ±10 mm vertical measurement ranges accommodate significant structural shifts, while the UV-resistant polymer body withstands outdoor conditions without fading. Simply align the crosshair center over cracks, secure with included adhesive pads or corrosion-resistant screws, and observe displacement trends over days, weeks, or months. The bold numbering and grid lines remain legible even in low-light environments, eliminating guesswork. Use it to monitor walls, concrete slabs, masonry joints, or foundation cracks—ideal for pre-purchase home inspections, earthquake damage assessments, and infrastructure maintenance.