Crack Monitor — clear, precise, analog crack monitoring device for walls and flat surfaces Key benefits Clear and precise readings: clear acrylic bottom plate and a transparent plate with a thin crossshaped cursor make crack movement easy to read and record. Simple, reliable operation: An analog Corner Crack Monitor shows horizontal or vertical displacement on a plane without batteries or electronics, making it practical for longterm use. Millimeter calibration: The bottom plate is calibrated in millimeters so you can measure small changes and track crack evolution over time. Practical and durable materials: Made with acrylic for good visibility and stable, repeatable readings. What it does Monitors the development of cracks in walls and other flat surfaces. Detects and records horizontal or vertical movement so you can determine whether a crack is stable, widening, or shifting. Provides straightforward visual data that can be logged and compared over days, weeks, or months. Important attributes Function: Analog crack monitoring for planar surfaces (horizontal and vertical movement). Material: Clear acrylic sheet with a transparent plate and a thinline cross cursor. Measurement: Bottom plate calibrated in millimeters for precise, incremental readings. Performance: Designed for ease of reading and consistent repeat measurements without power. Typical applications Homeowners tracking hairline or structural cracks after settling, renovation, or water damage. Building inspectors and contractors monitoring crack progression before and after work. Conservation or facility teams observing longterm movement in masonry, concrete, or plaster surfaces. How it helps Gives clear, repeatable measurements so you can document changes and make informed or monitoring decisions. Simple analog design reduces maintenance and risk of failure, suitable for shortterm checks and longterm observation.