DIFF Subgroup
G01D 3/02 with provision for altering or correcting the law of variation
Introduced: September 1968
Title
Titles differ between systems:
IPC: with provision for altering or correcting the transfer function
CPC: with provision for altering or correcting the law of variation
Full Title
Full titles differ between systems:
IPC:
Measuring arrangements with provision for the special purposes referred to in the subgroups of this group > with provision for altering or correcting the transfer function
CPC:
Indicating or recording apparatus with provision for the special purposes referred to in the subgroups > with provision for altering or correcting the law of variation
CPC subdivides this area 3x more granularly than IPC with 2 additional codes.
2 codes are CPC-only extensions.
IPC defines codes here since 1995.
Child Classifications
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- G01D 3/024 for range change; Arrangements for substituting one sensing member by another since 1995 IPC+CPC Available in IPC and CPC