| 17020 | Metrology and measurement in general |
| 17040 | Linear and angular measurements |
| 17060 | Measurement of volume, mass, density, viscosity |
| 17080 | Measurement of time, velocity, acceleration,angular velocity |
| 17100 | Measurement of force, weight and pressure |
| 17120 | Measurement of fluid flow |
| 17140 | Acoustics and acoustic measurements |
| 17160 | Vibrations, shock and vibration measurements |
| 17180 | Optics and optical measurements |
| 17200 | Thermodynamics and temperature measurements |
| 17220 | Electricity. Magnetism. Electrical and magnetic measurements |
| 17240 | Radiation measurements |
