NAIADES

Hygrometers; Illuminometers; Photometers; Acid hydrometers; Acidity analysers; Apparatus for testing gas, liquids and solids; Concentration meters; Electronic heliographic apparatus for recording the duration and intensity of sunshine; Environmental monitoring system comprised of meters and sensors that measure pressure, humidity, temperature and includes alarm and reporting functions; Level gauges; Measuring apparatus for temperature and humidity levels in gases and solid substances; Soil moisture meters; Surveying instruments; Surveying machines and instruments; Technical measuring, testing and checking apparatus and instruments for measuring, testing and checking the temperature, pressure, quantity and concentration of gas and liquids; Temperature indicators; Temperature sensors; Thermometers other than for medical use; Water level indicators; Wireless speakers; Soil testers