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Nalder Brothers and Co.. Electrical instrument makers,
of Red Lion Street, London. (1898).
1884 Company founded by Francis Henry Nalder in partnership with his brother to manufacture electrical instruments in Brentford, Middlesex
Became Nalder Brothers and Co
1891 Released a catalogue of their electric testing and scientific instruments. 
1893 Ernest Thompson became an assistant in the works and took charge of the test-room of the voltmeter and meter department.
1894 Wilkinson's valvometer 
1894 Dissolution of the Partnership between Francis Henry Nalder, Herbert Nalder, Charles William Scott Crawley, and Alfred Soames, carrying on business as Electrical and Mechanical Engineers, at 16, Red Lion-street, Clerkenwell, London, under the style or firm of Nalder Bros, and Co., as from the 24th day of June, 1894. All debts will be received and paid by Francis Henry Nalder, Charles William Scott Crawley, and Alfred Soames, who will continue the said business under the present style or firm of Nalder Bros, and Co.