3 Pcs Crack Monitoring Record Standard Acrylic Gauge Monitor for Walls, Corners, Ceilings with ±10mm Vertical ±20mm Horizontal Range, DIY & Professional Building Survey Tool

Precision Acrylic Crack Monitor: High transparency acrylic construction ensures clear visibility of wall cracks and precise visual alignment, allowing accurate tracking of even minor shifts in plaster, brick, or concrete surfaces Detailed XY Scale for Crack Movement: Integrated X Y axis grid provides precise horizontal and vertical measurements with fine resolution, enabling reliable structural assessments and accurate recording of wall deformation over time Analog Visual Recording: Mechanical tell-tale design records wall movement without electronics; the crosshair cursor moves with the crack opening or shifting, providing easy observation and manual documentation for ongoing monitoring Versatile Wall & Corner Monitoring: Suitable for internal and external use on walls, ceilings, and corners; ideal for building inspections, property surveys, structural engineering checks, and renovation projects with clear record sheets included Complete Installation Kit Included: Supplied with screws, adhesive pads, crack record sheets, and instructions for straightforward mounting; the stable acrylic construction ensures consistent positioning for long-term crack observation