Syncfusion React Linear Gauge

You'd reach for it when building temperature monitors, KPI dashboards, progress indicators, or any real-time data visualization that maps to a linear range. It handles the usual gauge mechanics: configurable axes with min/max values, bar or marker pointers, colored ranges for zones like safe/warning/critical, and annotations for labels. The API is fairly verbose with nested directive components, but it covers what you need including animations, export to PDF/PNG/SVG, and real-time value updates. Good fit if you need polished gauge visuals without building them from scratch, though the Syncfusion license model is worth checking for your project.