… flow meters, level gauges, manometers, heat meters), excluding instruments and apparatus of heading 90.14, 90.15, …
Explanatory notes
… flowmeters, level gauges, manometers, heat meters), excluding instruments and apparatus of heading 90.14, 90.15, … are based on the principle of differential pressure. These include : (1) Differential pressure (fixed aperture) … the content of gasometers . Level indicators for liquids include : (1) Float‑type . These may give a direct reading …