… or checking the flow, level, pressure or other variables of liquids or gases (for example, flow meters, level gauges, …
Explanatory notes
… or checking the flow, level, pressure or other variables of liquids or gases (for example, flowmeters, level gauges, … (piping, etc.). Some flowmeters use the principle of the fluid meters of heading 90.28 (turbine‑type, piston‑type, …