DENTAL SURVEYOR
Selecting path of insertion
q Orient cast relatively horizontal to the cast holder
q Place analyzing rod against abutments
q Examine teeth to be clasped for favorable retentive undercuts
q Anterior edentulous area for esthetic considerations
q Proximal and lingual tooth surfaces for guiding planes
q Soft tissue undercuts that act as interferences
q Undercut gauze is used to check for adequate and relatively equal undercut for retentive arms on all abutments. Alter the tilt of cast if required.
q Tilt cast to obtain the most usable compromise position. Final tilt should be rarely more than 10° from horizontal
q Lock the cast in position
q Tripod the cast
q Mark the heights of contour
Hence, path of insertion is always parallel to the vertical arm of the surveyor and is determined by the tilt of the cast on the surveyor 
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