This patent addresses a InnerView™ device and system for non-destructive measurement of structural characteristics of an object, such as anatomical structures (e.g. teeth), physical or industrial structures (e.g. materials and structures in buildings, machines, constructions, etc.) via a reciprocating energy application tool (e.g. tapping rod). The InnerView™ device utilizes a tip which protrudes to contact the surface of the object approximately perpendicularly and is further stabilized and/or positioned consistently through contact of a tab extending from the tip on another surface of the object, such as the top of the object.