26 TESTING AND REPAIR BENCHES, SOLD AS A UNIT AND EQUIPPED WITH SOLDERING TORCHES AND HOSES, HOSES FOR AIR TESTING, PRESSURE REDUCER AND REGULATOR AND PRESSURE GAUGE, AND FLOW TEST MACHINES SOLD AS A UNIT AND EQUIPPED WITH ADJUSTABLE WATER REGULATING VALVE AND FLOW TESTING GAUGE ALL USED IN CONNECTION WITH CLEANING, TESTING, REPAIR, AND REBUILDING OF RADIATORS OF FUEL OPERATED MOTORS AND ENGINES