<prompt> Surveyor is used forSurveying diagnostic castContouring wax patternsMeasuring undercutsAll of the above  <response>: The surveyor may be used for surveying the diagnostic cast, recontouring abutment teeth on the diagnostic cast, contouring wax patterns, measuring a specific depth of undercut, surveying ceramic veneer crowns, placing intracoronal retainers, placing internal rests, machining cast restorations, and surveying and blocking out the master cast. 