… pyrometers, barometers, hygrometers and psychrometers, recording or not, and any combination of these instruments. …
Explanatory notes
… pyrometers, barometers, hygrometers and psychrometers, recording or not, and any combination of these instruments. … with other instruments : 9025.11 ‑ ‑ Liquid‑filled, for direct reading 9025.19 ‑ ‑ Other 9025.80 ‑ Other instruments … generally by direct reading on a graduated stem, the specific gravity of solids or liquids, or some arbitrary …