9 Scientific, weighing, measuring, checking, inspection apparatus and instruments; metrology instruments; apparatus for analyzing gases, light, humidity, liquids, fluids, noise, air; altimeters; aerometers; anemometers; barometers; hygrometers; sound locating instruments; heat regulating apparatus; flow meter; detectors and sensors for gas, light, humidity, liquids, noise, air; breath detectors; indicators for gas, light, humidity, liquids, noise, air