Dramatically increase your speed and accuracy in detecting invisible delamination, voids and hollows below the surface of concrete and natural stones, compared with tapping with hammers or dragging chains.
Use for inspecting concrete slabs, parking garages, bridge decks, balconies and tunnels.
The body of the DDT Tool is an alnminum extrusion, threaded to accept a standard painter's extension pole or broom handle (Albion part #876-1 or 876-2). There is also a slot (with a set screw) for a marking crayon. The wheels are hardened steel, mounted on precision shoulder bolt axles spring loaded for smooth turning and no loss of auditory feedback.