An annular steel ring attached to the upper end of a deflecting wedge, having a slightly smaller diameter than that of the borehole in which the wedge is inserted, serving as a stabilizing ring to hold and center the wedge in the borehole. also called rose ring.
Deflecting, английский The act or process of intentionally or un¬intentionally changing the course of a borehole at a point some distance below the collar. 31
