IPC Subgroup
G01C 3/32 by focusing the object, e.g. on a ground glass screen
Introduced: September 1968
Last revised: January 2006
Full Title
Measuring distances in line of sight; Optical rangefinders > by focusing the object, e.g. on a ground glass screen
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY