… pyrometers, barometers, hygrometers and psychrometers, recording or not, and any combination of these instruments. …
Explanatory notes
… hygrometers and psychrometers, recording or not, and any combination of these instruments. ‑ Thermometers and pyrometers, not combined with other instruments : 9025.11 ‑ ‑ Liquid‑filled, … strength of spirituous liquors). The reading is sometimes converted by a table into other units. The instruments are …