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MOVABLE APPARATUS FOR TESTING A TAP WATER METER, CAPABLE OF ENHANCING THE ECONOMY OF WATER-FACILITY MAINTENANCE THROUGH THE SELECTIVE REPLACEMENT OF THE TAP WATER METER TESTED IMMEDIATELY ON THE SPOT
MOVABLE APPARATUS FOR TESTING A TAP WATER METER, CAPABLE OF ENHANCING THE ECONOMY OF WATER-FACILITY MAINTENANCE THROUGH THE SELECTIVE REPLACEMENT OF THE TAP WATER METER TESTED IMMEDIATELY ON THE SPOT