Enhanced measurement clarity: A acrylic sheet features a clear measurement grid with precision markings, aiding accurate crack monitoring and reducing reading errors. Track movement accurately: A dependable crack monitoring device captures both horizontal and vertical changes using a straightforward analog approach, delivering steady, repeatable results. Accurate data recording: Two removable pins enable adjustable setup, while readings on the chart and cursor clearly show movement for consistent crack observation. Comprehensive crack tracking: Provides manual 2D crack tracking to capture progressive changes effectively, helping maintain steady observation over time. Use scenarios Residential and commercial wall monitoring during construction or renovation: Install on interior or exterior walls to document crack progression from settlement or loading, enabling timely planning. Building maintenance and safety assessments: Use for periodic checks on walls and partitions to track crack growth over weeks or months, supporting compliance and maintenance decisions. Field testing and quality assurance: Apply during curing, loading tests, or other structural evaluations to record 2D crack development and verify performance.