Corner Crack Monitor — durable, easy-to-read analog device for tracking crack movement over time Key benefits - Detect and quantify movement: Clearly shows horizontal or vertical displacement of cracks on a single plane so you can track whether a crack is stable or actively shifting. - Durable and long-lasting: Made from high-quality acrylic that is smooth, rigid and resistant to breakage, so the monitor stays accurate and usable over time. - Clear, precise readings: A very clear acrylic sheet with an easy-to-read measurement grid provides reliable, repeatable visual measurements without electronics or calibration. Main features - Material: High-quality acrylic — robust, smooth and not easily broken. - Measurement grid: Transparent acrylic plate with a clearly printed, easy-to-read scale for precise observation. - Function: Analog corner crack monitor designed to observe horizontal or vertical movement of cracks on a plane. - Practical: Simple to use for regular checks and to document crack evolution over time. Typical applications - Home maintenance: Monitor hairline cracks and corner cracks in interior drywall or plaster to decide if repair is needed. - Building and civil inspections: Track movement in masonry, foundations or retaining walls during repair, renovation or after seismic events. - Preservation and conservation: Observe changes in cracks on historic or sensitive structures where non‑invasive, long-term monitoring is required. Why choose this monitor - Provides a straightforward, reliable way to record crack behavior without power or complex equipment. - Durable acrylic construction and a legible measurement grid make routine monitoring practical and precise. - Designed specifically to measure horizontal or vertical movement on a plane, making it suitable for corners and flat surfaces where crack progression must be tracked.