THE POST OFFICE
■LAGERST BATTERY USER IN N.Z
The largest user of electrical dry cells in New Zealand is the Post Office, which purchases at least 74,000 every year. They constitute so important a factor in maintaining communications both by telegraph and telephone that the greatest care is taken to use omy reliable and well-tested cells, amt the Chief Engineer’s technical staff in Wellington has devised a very ingenious apparatus for this purpose. Dry battoiies when in service are generally required to give electrical current intermittently, as happens when a conversation takes place on a batter} -operated telephone line. Samples of dry cells used bv the Post Office are wired u p to a circuit which, under the control of a clock, subjects them to service at regular intervals. Upon the results of this lengthy ordeal depend whether the batteries of that elrss can .'he passed for regular use. Another factor of value in dry batteries is long life pv e n when not being usel. and the shelf test to which they are subjected is self-explanatory.
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Bibliographic details
Hokitika Guardian, 7 June 1935, Page 4
Word Count
177THE POST OFFICE Hokitika Guardian, 7 June 1935, Page 4
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