IPC Definitions - January 01, 2012
E21B 47/08 - Definition
This group covers:
Processes or apparatus for determining the length of a line segment that initiates at a point on the periphery of a borehole, passes through the borehole center and terminates at another point on the periphery of the borehole, or a similar measurement, e.g. a similar line segment between opposed points of elliptically shaped borehole or tubing or measuring tubing thickness.
Attention is drawn to the following places, which may be of interest for search:
Measuring diameter in general | G01B |