DIFF Subgroup
G01C 9/36 of the spherical type, i.e. for indicating the level in all directions
Introduced: September 1968
Full Title
Measuring inclination, e.g. by clinometers, by levels > by using liquids > in closed containers partially filled with liquid so as to leave a gas bubble > of the spherical type, i.e. for indicating the level in all directions
No child classifications to compare. This is a leaf node in both IPC and CPC.