This is a disc water meter with split case and serial number 439,868 that fit a ⅝" pipe. It was made by the Buffalo Meter Company in Buffalo, N. Y. The firm was founded in 1892 and brought out the first Niagara meter soon thereafter. The case of the Niagara meter was made of cast iron coated with zinc, for use in hard or corrosive water. This example was probably made in the 1930s. It has a disc of hard rubber reinforced with a metal plate. And it probably has jewel bearings for greater accuracy and durability.
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