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Hauraki Plains Gazette, Volume XXXVIII, Issue 5072, 7 January 1927, Page 4

A clever telephonic arrangement which is being tried in connection With two of the Wellington city water service reservoirs (states the Evening Post) enables the water works engineers—or anyone else who knows the numbers —to ascertain how much water there is in the reservoirs by going to the telephone, and “dialling” the reservoir itself, not someone who is stationed at the reservoir. The system being tested does not talk back, it merely buzzes off fept, but a more, elaborate and also more expensive telephonic recording system gives the information spoken words, by means of a record which is adjuste/1 to the soundbox of the tele-phone-gramophone by the rise or fall o'f the water level. At the main re» servoirs, in the W.ainui and Karori Valleys ,there are permanent staffs who see, to the levels and th® operations of valves, etc., but the. several service reservoirs about the city carry on with merely what inspections are considered necessary. To go to the telephone, and dial five numbers is a very much quicker business than to go to the garage and drive five miles.