DIFF Main Group
G01B 17/00 Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
Introduced: September 1968
IPC and CPC are identically structured here. All 4 subcodes exist in both systems.
Child Classifications
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- G01B 17/04 for measuring the deformation in a solid, e.g. by vibrating string IPC+CPC Available in IPC and CPC
- G01B 17/08 for measuring roughness or irregularity of surfaces since 1995 IPC+CPC Available in IPC and CPC