Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments, especially air analysis apparatus and air current measuring apparatus, vacuum gauges, vacuum tubes, including goods for use for blowers, fans, compactors and compressors, chargers, air filters, air condensers and centrifuges; software; automatic control apparatus; controllers, for use in relation to the following ...