- Section C : Manufacturing
- Division 26 : Manufacture of computer, electronic and optical products
- Group 26.5 : Manufacture of instruments and appliances for measuring, testing and navigation; watches and clocks
- Class 26.51 : Manufacture of instruments and appliances for measuring, testing and navigation
Sub-class 26.51B : Manufacture of scientific and technical instruments
Nomenclatures
Last updated on: 12/19/2025
Associated products CPF rev. 2.1
26.51.31 – Balances of a sensitivity of 5 cg or better
26.51.41 – Instruments and apparatus for measuring or detecting ionising radiations
26.51.42 – Cathode-ray oscilloscopes and cathode-ray oscillographs
26.51.43 – Instruments for measuring electrical quantities without a recording device
26.51.44 – Instruments and apparatus for telecommunications
26.51.45 – Instruments and apparatus for measuring or checking electrical quantities n.e.c.
26.51.51 – Hydrometers, thermometers, pyrometers, barometers, hygrometers and psychrometers
26.51.53 – Instruments and apparatus for physical or chemical analysis n.e.c.
26.51.61 – Microscopes (except optical microscopes) and diffraction apparatus
26.51.62 – Machines and appliances for testing the mechanical properties of materials
26.51.63 – Gas, liquid or electricity supply or production meters
26.51.65 – Automatic regulating or controlling instruments and apparatus, hydraulic or pneumatic
26.51.66 – Measuring or checking instruments, appliances and machines n.e.c.
26.51.81 – Parts of radar apparatus and radio navigational aid apparatus
26.51.83 – Parts and accessories of microscopes (other than optical) and of diffraction apparatus
26.51.84 – Parts and accessories for the goods of 26.51.63 and 26.51.64
26.51.85 – Parts and accessories of instruments and apparatus of 26.51.65, 26.51.66 and 26.51.70
26.51.86 – Parts and accessories of instruments and apparatus of 26.51.11 and 26.51.62
