industry inspector worker wearing a safety protection helmet inspecting, tie, secure stopping knot attached on descender device

abseiling access active aluminium attached attaching back background belay business carabine carabiner clevis closeup construction danger descender design designer device equipment figure fixed harness height helmet high icon industrial industry inspecting inspector isolated knot occupation outdoor prior protection protective reliability risk rope safe safety secure security stopping strap strong support technician technology tie tower two used wearing work worker