IPC Subgroup
G01B 9/025 Double-exposure technique
Introduced: July 1974
Last revised: January 2006
Full Title
Measuring instruments characterised by the use of optical techniques > Interferometers > using holographic techniques > Double-exposure technique
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS