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- Manufacture of laboratory and scientific instruments and apparatus n.e.c.: microscopes other than optical microscopes; apparatus for measuring and checking electrical quantities (oscilloscopes, spectrum analyzers, instruments for checking current, voltage, resistance); for measuring and checking non-electrical quantities (radiation detectors and counters, apparatus for testing and regulating vehicle motors and instruments and apparatus specially designed for telecommunications such as cross-talk meters); for testing physical properties of the materials; for carrying out physical or chemical analysis; and for measuring or checking the flow, level, pressure or other variables of liquids (3)
- Manufacture of regulating or controlling instruments and apparatus except industrial process control equipment: thermostats, pressure controllers, level regulators and automatic regulators of electrical quantities (1)
- Manufacture of other measuring, checking or testing instruments, apparatus or machines n.e.c. : hydrometers, thermometers, barometers, taximeters, pedometers, balancing machines, instruments for checking watches and watch parts and so forth (1)