Autonomous drone for performing safe, reliable, and cost-effective dry film thickness measurement. Performs 100 or more DFT readings per hour, at multiple measurement sites, with optional all-day flight via ground power (no battery changes). User interface displays real-time measurement values. Data records are exported to user as a text-based .csv file. Performs measurements pursuant to SSPC-PA 2, ASTM D 7091, IMO PSPC and others.