IPC Subgroup
G02B 27/32 Fiducial marks or measuring scales within the optical system
Introduced: September 1968
Last revised: January 2006
Full Title
Optical systems or apparatus not provided for by any of the groups , > Fiducial marks or measuring scales within the optical system
Classification Context
- Section:
- PHYSICS
- Class:
- OPTICS
- Subclass:
- OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
2 direct subcodes
Child Classifications
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- G02B 27/34 illuminated
- G02B 27/36 adjustable