… Hydrometers and similar floating instruments, thermometers, …
Explanatory notes
… 90.25 ‑ Hydrometers and similar floating instruments, thermometers, … not combined with other instruments : 9025.11 ‑ ‑ Liquid‑filled, for direct reading 9025.19 ‑ ‑ Other 9025.80 … direct reading on a graduated stem, the specific gravity of solids or liquids, or some arbitrary value related to …