- Clear measurement grid on a sturdy acrylic panel enables exact markings for crack observation and accurate monitoring. - Consistent tracking of horizontal and vertical movement provides dependable observation without digital tools or complexity. - Reliable tracking mechanism records on a chart using two removable pins; a cursor shows movement to support precise crack analysis. - Manual 2D wall crack monitoring allows consistent measurement over time for long-term data collection. - Material and design: durable acrylic with a visible grid for repeatable use in field or workshop settings. - Compatibility and performance: designed for standard manual crack observation workflows; no electronics required, providing straightforward, trustworthy results. - Use scenarios: - Monitor crack growth in concrete or masonry walls during construction or after seismic events. - Track slow crack progression on building facades or basement walls for routine maintenance. - Post-event assessment to quantify displacement and inform repair decisions.