… Instruments and apparatus for measuring or checking the flow, level, pressure or other variables of liquids or …
Explanatory notes
… 90.26 ‑ Instruments and apparatus for measuring or checking the flow, level, pressure or other variables of liquids or … Nomenclature, such as : (a) Pressure‑reducing valves and thermostatically controlled valves ( heading 84.81 ); (b) … and hydrological level gauges ( heading 90.15 ); (c) Thermometers, pyrometers, barometers, hygrometers and …