... Produced(Previous Year) Water Meter, Water Meter Parts Water Meter 1,800,000 Sets Per Year Water Meter Parts 3,600,000 Sets ... Year(s) Used Condition Water meter durability test device LS-3B 18 2.0 Acceptable Water meter calibration device (parallel connection) LS-3B ... 18 2.0 Acceptable Water meter examination device 15-50 1 ...