Assembly for testing conduit pipes through walls and ceilings, for laying cables through them, has a flexible cable with a signal conductor wound around a roller with a coupled signal unit at the roller near the cable end

摘要

The assembly to test conduit pipes, for laying cables through walls and ceilings, has a rotating roller unit at a holder where a flexible cable (39) is wound around it incorporating at least one signal conductor (42) with one end fixed at the roller. A signal unit (46) is keyed at the roller, near the cable end, with a coupling (52,53) for communication between them.