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Title: Fundamental Principles Of Displacement Meters
Author: C. C. Abbott
Source: 1944 Southwestern Gas Measurement Short Course (Now called ISHM)
Year Published: 1944
Abstract: In the early days of the gas industry each custoniev paid for his gas according to the number of burners he had in his house and he was entitled to use the service for a specified number of liours, usually from sunset to an hour decreed by the gas company as the proper time for retiring. The first gas meter was of the wet type, the invention of Samuel Glegg, patented in 1816. Three years later Malam developed a wet meter which is identical in principle with the wet meter used today, Figure 1 shows a cross section from which the operation of a typical wet meter may be studied. The wet meter, however, is not satisfactory In locations where constant attendance is not available. It is very bulky for its capacity and not particularly suited for general use.

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