active 1876-1901, thermometer & hydrometer maker, Nenhaus am Rennwig, Thüringen, Germany Haak, William 1836 - 1898
active 1851-1899(?), optician, meteorological, mathematical & philosophical instrument maker, London Pastorelli and Company 1851 - 1899
active 1848-1860, barometer, thermometer, mathematical & optical instrument makers, London, England L Casella and Company
active 1839-1913, optician, mathematical, barometer, thermometer, hydrometer maker, London, British J. Somalvico and Co.
active 1857-1861, chem. & philosophical inst., barometer & thermometer maker & ironmonger, London G Knight and Company
active 1845-1846, optician, hydrometer, barometer and thermometer maker, London, British Ronketti, John George Harris
active 1838-1860, barometer, thermometer, and storm glass maker, La Gorgue, France, French Lebleu-Turpin
active 1839-1857, chem. & philosophical inst., barometer & thermometer makers & ironmonger, Britain George Knight & Sons
active 1845-1860, barometer and thermometer maker, Halifax, Yorkshire, England, British Lainton, Samuel
active 1845-1863, optician, optical instrument, barometer & thermometer Maker, Birmingham, England R. Field & Son
