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1834 the Casartelli family emigrated to Liverpool, joining Luigi Casartelli (also known as Louis Casartelli) in his scientific instrument business, at 20 Duke Street, Liverpool, making barometers and thermometers.
By 1845, Joseph Casartelli and his uncle, Antonio Giovanni (Anthony), had taken over Louis senior's business. The two continued in partnership as opticians and barometer and thermometer makers and glass-blowers for the next six years.
1851 Dissolution of the Partnership between Anthony Casartelli and Joseph Casartelli, as Opticians and Philosophical Instrument Makers, at No. 20, in Duke-street, in Liverpool, in the county of Lancaster, under the firm of Anthony and Joseph Casartelli
1853 Dissolution of the Partnership between Anthony Casartelli and Anthony Casartelli the younger, both of Liverpool, in the county of Lancaster, Opticians,and carrying on business at Liverpool aforesaid in co-partnership, under the firm of A. and A. Casartelli.
1858 Patent to Anthony Casartelli and Louis Casartelli, both of Liverpool, in the county of Lancaster, Opticians, for the invention of "improvements in pressure and vacuum gauges."
1859 Dissolution of the Partnership between Anthony Casartelli and Louis Casartelli, carrying on business at No. 20, Duke-street, Liverpool, in the county of Lancaster, as Opticians and Mathematical Instrument Makers, under the style or firm of A. and L. Casartelli.
1929 Casartelli and Son took over the Liverpool business.
1931 After the Manchester branch of the company went into liquidation, the rest of the company continued to make and sell surveying and textile testing equipment under the Casartelli name until 1966, when it moved once more to premises on Liverpool Street, Salford.
1984 J. Casartelli and Son (Liverpool) Ltd was voluntarily wound up