with one observation point at each end of the base (G01C3/20 takes precedence)

Introduced: September 1968

Title

Titles differ between systems:

IPC: with one observation point at each end of the base

CPC: with one observation point at each end of the base (G01C3/20 takes precedence)

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 > with one observation point at each end of the base

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 > with one observation point at each end of the base (G01C3/20 takes precedence)

No child classifications to compare. This is a leaf node in both IPC and CPC.