A NEW INVENTION
DEW WHICH' RINGS THE " TELEPHONE. Dew which announces its arrival and departure by ringing a telephone bell is one of the wonders of the British Government’s National Physical Laboratory, near London. The device (which depends upon the reflection of ,light, ,on to a phpja)-_e.legtxie -tell.). has boon invented for the use of refrigerating engineers who are studying... the cold storage of Empire meat .and Jru.it, One of the problems, which this device may help to solve,, con-, ceriis the moisture in the atmosphere of fruit stores. . .
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Hokitika Guardian, 29 July 1931, Page 5
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89A NEW INVENTION Hokitika Guardian, 29 July 1931, Page 5
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