The IoT Smart Level flatnessmeter offers functionalities for measuring flatness, inclination, and verticality. Utilizing multi-sensor fusion technology, it efficiently and accurately measures flatness. Paired with an APP data management system, it allows for one-click data recording and exportation of spreadsheets, eliminating the need for manual writing. It is ideal for construction documentation, prefabricated component inspection, installation, formwork angle measurement, and wall and floor acceptance.The IoT Smart flatnessmeter boasts three significant advantages: Comprehensive Measurement Capabilities: It allows for the simultaneous measurement of flatness, levelness, and verticality with high precision. The flatness accuracy reaches ±0.5 millimeters, while the levelness and verticality accuracy can achieve ±0.05 degrees. Elimination of Manual Gauging: By removing the need for hand-held gauges, the measurement efficiency is increased by 55%. Integration with Data Logging App: When paired with a data recording application, it eliminates the need for manual data entry and spreadsheet management, streamlining the data handling process.The IoT Smart Flatnessmeter features the capability to measure flatness, inclination, and verticality. Through multi-sensor fusion technology, it efficiently and accurately measures flatness. Paired with an APP data management system, it allows for one-click data recording and the export of spreadsheets, eliminating the need for manual handwriting throughout the process. It is suitable for various scenarios including construction documentation and prefabricated component inspection, installation, formwork angle measurement, and wall and floor acceptance.