Hand held tool that converts
compressed air from a portable compressor to a supersonic jet stream
that is used to dig safely in the ground, without damage to buried
gas pipe lines, tree roots, sewer pipes, and other non-porous objects.
held tool that converts compressed air from a portable compressor
to a combination suction and transport stream within a suction tube,
so as to vacuum dirt crumbled by the AIR KNIFE, to the side of the
excavation. Will also vacuum aggregate up to a maximum dimension of
2 3/4 inches, and water.