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2019

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978-0-243-66845-8

0-243-66845-7

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Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. Still another good feature is that no attention is necessary until the charge is entirely exhausted; that there are no noxious or poisonous fumes, and that the permanent parts of the battery do not deteriorate with time, as is the case with other batteries. This battery is now extensively used for all closed circuit work requiring considerable current, and it gives universal satisfaction. It can also be equally well employed for open circuit work, such as burglar alarms, hotel annunciators, telephones, call-bell 'circuits and railway crossing signals.

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