1. Adopting volumetric rotary piston principle of measurement with
|
....................conformity to AWWA C-700.
|
................2. Vacuum sealed register ensures the dial kept free from fog and
|
....................keep the clear reading in long term service.
|
................3. Measuring units: U.S.GALLON, CUBIC FEET and M3, and adopting
|
....................long pointer structure in the register, and high precision.
|
...
|