Measuring distances in line of sight; Optical rangefinders

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:: PHYSICS
Class:: MEASURING; TESTING
Subclass:: MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY

measuring DISTANCES in line of sightoptical RANGEFINDER(S)

6 direct subcodes

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G01C 3/02 Details
G01C 3/1 using a parallactic triangle with variable angles and a base of fixed length in the observation station, e.g. in the instrument
G01C 3/22 using a parallactic triangle with variable angles and a base of fixed length at, near, or formed by, the object
G01C 3/24 using a parallactic triangle with fixed angles and a base of variable length in the observation station, e.g. in the instrument
G01C 3/26 using a parallactic triangle with fixed angles and a base of variable length at, near, or formed by, the object
G01C 3/32 by focusing the object, e.g. on a ground glass screen