… liquids or gases (for example, flow meters, level gauges, manometers, heat meters), excluding instruments and …
Explanatory notes
… of liquids or gases (for example, flowmeters, level gauges, manometers, heat meters), excluding instruments and … or gases. The instruments and apparatus of this heading may be fitted with recording, signalling or optical … of heading 90.28 (turbine‑type, piston‑type, etc.), but the majority are based on the principle of differential …