Concrete Crack Monitor, Crack Monitoring Gauge, Crack Gauge for Internal and External Corners 70-180 Degrees, Hinged Design for 2D or 3D Movement, Clear with Black Red 0 mm Graduation Marks(2 Pcs)

SMTOER Concrete Crack Monitor – Corner Tell-Tale for Precise Crack Tracking Monitor cracks in corners with confidence. This hinged crack monitoring gauge is specifically designed for internal and external corners from 70° to 180°. Use singly for two-dimensional movement or pair two units for full three-dimensional monitoring. Each unit includes a calibrated bottom plate (mm scale) and a transparent top plate with a hairline cross cursor, allowing ±0.1 mm precision when used with Vernier or digital calipers. Installation is simple with supplied screws, nuts, and a detailed instruction guide. A crack record sheet is included for long-term tracking. Ideal for structural engineers, building inspectors, and homeowners.

• Versatile Corner Monitoring (Crack Gauge for 2D/3D Movement): Designed as a corner tell-tale, this crack monitor can be used singly to monitor two-dimensional crack movement or in pairs to monitor three-dimensional movement. Ideal for both internal and external corners with angles ranging from 70 to 180 degrees
• Hinged Design for Simple Installation: The crack monitoring gauge features a hinged construction that enables it to adapt seamlessly to internal corners. Use the provided screws and nuts to attach the adapter, then affix across the crack using screws/plugs or adhesive (adhesive available separately)
• Accurate Crack Measurement with ±0.1 mm Precision: Precision-engineered crack displacement monitors include calibrated bottom plates for millimeter measurements and transparent top plates marked with a hairline cross cursor. Record crack movements with ±0.1 mm accuracy using Vernier or digital calipers
• Complete Package for Ongoing Monitoring: Each crack gauge comes complete with detailed installation instructions, a crack record sheet for ongoing monitoring, and all necessary components for installation. Monitor crack movements effectively and efficiently with SMTOER’s concrete crack monitor
• Clear, Durable Construction with High-Visibility Marks: Made from clear material with black/red graduation marks starting at 0 mm. Provides easy visual reference for crack displacement over time, suitable for both indoor and outdoor corner applications