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Dr Aron's electricity meter of 1888

The first commercial electricity meter introduced to England. (p. 31) It was the invention of the German Dr Hermann Aron and was made and sold in the UK by Hugo Hirst of GEC.
Data
Fonte Scan from [[http://philosopedia.org/index.php/Adam_Gowans_Whyte | Whyte, Adam Gowans (d. 1950)]] (1930) Forty Years of Electrical Progress, Londra: Ernest Benn, pp. p. 159
Autore Andy Dingley (scanner)
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This UK artistic or literary work, of which the author is unknown and cannot be ascertained by reasonable enquiry, is in the public domain because it is one of the following:
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  • A photograph, which was made available to the public (e.g. by publication or display at an exhibition) more than 70 years ago (before 1 January 1954); or
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attuale18:48, 14 gen 2010Miniatura della versione delle 18:48, 14 gen 2010708 × 1 010 (140 KB)Andy Dingley{{Scans from 'Forty Years of Electrical Progress'}}

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