Testo India Is 100% Subsidiary Of Testo AG (Germany). Manufacturers Of Portable Testing & Measuring Instruments For Temperature, Humidity, Pressure, Air Velocity, Thermal Imagers, HVAC Measuring Instruments, Flue Gas Analyzers & Data Loggers, Stationery Measuring Instruments Such as Data Loggers, Transmitters For Humidity and Temperature, Differential Pressure, Compressed Air Flow Meters and Wireless Data Monitoring Systems. Keywords: Portable Testing & Measuring Instruments.