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Signature	Maker	Instruments	Comments	Location	References
GUANZIROLI, GIUSEPPE	England, fl.1834-60, PHIM		barometer maker; see Battistessa, Molteni and Guanziroli; see Zerboni, Battistessa, Molteni and Guanziroli; worked alone after 1852.	106 Hatton Garden, London.	Goodison 1; Bell 2.
GUANZIROLI, GIUSEPPE	England, fl.1834-60, PHIM		barometer maker; see Battistessa, Molteni and Guanziroli; see Zerboni, Battistessa, Molteni and Guanziroli; worked alone after 1852.	106 Hatton Garden, London.	Goodison 1; Bell 2.

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