A MOVABLE SKIP ADAPTED TO BE REMVABLY MOUNTED ON POWER LINES AND THE LIKE AND TO CARRY A MAN WHO CAN PULL THE SKIP ALONG THE LINES OR OPERATE A MOTOR TO RUN THE SKIP THEREALONG. THE SKIP INCLUDES A CAGE FOR CARRYING THE OPERATOR, AND SUSPENSION MEANS FOR MAINTAINING THE CAGE LEVEL WHEN THE REMAINDER OF THE SKIP IS NOT LEVEL DUE TO THE POSITION OF THE LINES, THE SKIP HAS SUPPORTING PULLEYS ADAPTED TO MOVE ALONG THE INES, AND THE ARRANGEMENT IS SUCH THAT THE OPERATOR CAN USE HIS WEIGHT TO HELP LIFT THE PULLEYS SUCCESIVELY OVER ANY HARDWARE CONNECTED TO THE LINES.