Abstract
MESSRS. E. DENT AND CO., of the Strand and Royal Exchange, London, have been for some time past at work upon three galvanic chronographs of unusual accuracy and power. They surpass in both respects, so far as we know, any similar instruments yet constructed; and we believe, therefore, some account of them will be interesting to our readers. They are destined respectively for the Royal Observatory of Brussels, for the Japanese Government, and for the Egyptian Government.
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The Chronograph . Nature 23, 59–62 (1880). https://doi.org/10.1038/023059a0
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DOI: https://doi.org/10.1038/023059a0