. A domestic cyclopædia of practical information ... possible by takingcare that the pipes all drain into the meter,without any depending portions except at theburners, where it is impossible to avoid it. A Water Meter consists of a drum divid-ed into four compartments by partitions so arranged that when the water is at theproper level—so as to immerse about three-fifths of the drum — gas may enter into orescape from some of the compartments, butcannot do both at the same time in the case ofany one compartment. The drum is moved bythe pressureof the gas against the motion of the
. A domestic cyclopædia of practical information ... possible by takingcare that the pipes all drain into the meter,without any depending portions except at theburners, where it is impossible to avoid it. A Water Meter consists of a drum divid-ed into four compartments by partitions so arranged that when the water is at theproper level—so as to immerse about three-fifths of the drum — gas may enter into orescape from some of the compartments, butcannot do both at the same time in the case ofany one compartment. The drum is moved bythe pressureof the gas against the motion of the drum is communicatedto wheel-work which turns the hands on themeter dial. The measuring space of the meterdepends of course upon the level of the water in METER 351 the drum; if this is too high the meter has tomake more revolutions to pass a given amount ofgas, and registers high or against the consumer. If the water is too low, fewer revolutions for thesame amount are required, and it registers lowor against the company. To prevent the for-. FlG. 2. Vertical section of wet meter. G inlet, ^ outlet, A float, /valve, « overflow pipe, w plug to let off surplus water,wheel-work of dials ; V, plug for pouring water into meter. mer state of affairs so far as possible, the tubeft (Figs. 2 and 3), is so arranged as to act as anoverflow and stop the flow of gas completely if
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