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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
G01C 3/10

using a parallactic triangle with variable angles and a base of fixed length in the observation station, e.g. in the instrument

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Measuring distances in line of sight; Optical rangefinders > using a parallactic triangle with variable angles and a base of fixed length in the observation station, e.g. in the instrument

CPC:

Measuring distances in line of sight; Optical rangefinders (tapes, chains or wheels for measuring length G01B3/00; active triangulation systems, i.e. using the transmission and reflection of electromagnetic waves other than radio waves, G01S17/48) > using a parallactic triangle with variable angles and a base of fixed length in the observation station, e.g. in the instrument

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

3 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • G01C 3/12 with monocular observation at a single point, e.g. coincidence type (G01C3/20 takes precedence) IPC+CPC Available in IPC and CPC
  • G01C 3/18 with one observation point at each end of the base (G01C3/20 takes precedence) IPC+CPC Available in IPC and CPC
  • G01C 3/20 with adaptation to the measurement of the height of an object IPC+CPC Available in IPC and CPC