This meter is placed on the service pipe on the house side of the above-mentioned stop cock.
The gas passes from the holder through a purifier charged with "Owens" purifying material to the service pipe.
This tube is placed within a metallic one, which is directly attached to a cock that is soldered to the service pipe.
In the tube through which the service pipe passes is a felt filter for taking the dust out of the gas.
From thence the water is returned to the service pipe and distributed through the house.
More than eighteen miles of service pipe are now in use, and there are over two hundred fire hydrants at various points.