DIFF Subgroup
G01C 7/06 of cavities, e.g. tunnels
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Tracing profiles > of cavities, e.g. tunnels
CPC:
Tracing profiles (by photogrammetry or videogrammetry G01C11/00) > of cavities, e.g. tunnels
No child classifications to compare. This is a leaf node in both IPC and CPC.