active 1790-1820, mathematical, philosophical, nautical & optical instrument makers, Paris, France Jecker, Francoise-Antoine 1765 - 1834
1897-1948, optical, mathematical & philosophical instrument maker, London, England Ross Limited 1897 - 1948
1753-1835, active, 1804-1826, optician & mathematical instrument maker, English; British Troughton, Edward 1753 - 1835
c1716-1788, active 1756-1788, mathematical instrument maker, English; British Troughton, John 1716 - 1788
active 1868-1909/14, optical & mathematical instrument maker, Irish; British Grubb, Sir Howard 1844 - 1931
1878-1969, mathematical & scientific instrument maker, Manchester & London, England J Halden and Company Limited 1878 - 1969
1859-1897, optical, mathematical & philosophical instrument maker, London, England, British Ross and Company 1859 - 1897
c. 1739-1807, active 1768-1788, mathematical instrument maker, English; British Troughton, John 1739 - 1807
1688-1763, mathematical instrument maker; science lecturer, British; English Hauksbee, Francis 1604 - 1763
active 1832-1922, optician & mathematical instrument maker, Dublin, Ireland Yeates and Son 1832 - 1922
1634/5-1724, sundial maker; mathematical, optical & scientific instrument maker, England & Paris, France Butterfield, Michael 1634 - 1724
1695-1766, active 1720-1750, mathematical, philosophical, optical instrument maker, London, England Cole, Benjamin 1695 - 1766
1625-1695, natural philosopher; mathematical instrument maker; engineer; inventor; diplomat; English Morland, Sir Samuel 1625 - 1695
1793-1860, active 1821-1826, optical & mathematical instrument maker, English; British Simms, William 1793 - 1860
1768-1816, active 1789-1816, mathematical, optical and philosophical instrument maker, English Barnett, Thomas 1768 - 1816
1835-1898, active 1850-1898, mathematical instrument maker, York, England Cooke, Frederick 1835 - 1898
active 1835-1875, optician, philosophical & mathematical instrument maker, Liverpool, England Adie, Richard 1810 - 1881
active, 1812-1856, optical, mathematical, philosophical & nautical inst. maker & optician, British Newman, John Frederick 1783 - 1860
active 1808-1847, compass maker; optician & mathematical, philosophical instrument maker, London, England, British Bate, Robert Brettell 1782 - 1847
active 1818-1856, optician, optical, mathematical & philosophical instrument maker, London, England Watkins & Hill 1818 - 1856
1792-1841, active 1823-1841, optician, mathematical & philosophical instrument maker, British Robinson, Thomas Charles 1792 - 1841
active 1835-1875, optical, nautical & mathematical instrument maker, London, England Hughes, Henry 1835 - 1875
1746-1815, active 1774-1803, optical, mathematical & philosophical instrument maker, Scottish Miller, John 1746 - 1815
active 1852-1912, optical, surveying and mathematical instrument makers, English J H Steward 1852 - 1912
active 1796-1831, optician, optical & mathematical instrument maker, English; British Bancks, Robert 1796 - 1831
1750-1795, [Adams the Younger] active 1772-1795, mathematical instrument maker; globe maker, English; British Adams, George 1750 - 1795
1735-1800, active 1762-1800, mathematical instrument maker; optician; author, British; English Ramsden, Jesse 1735 - 1800
active 1841-1845, optician, optical, mathematical & philosophical instr. maker, Manchester, England Abraham and Dancer 1841 - 1845
active 1820-1852, optician; optical, mathematical, astronomical & philosophical instrument maker Dollond, George 1774 - 1852
1731-1820, active from 1750, optical instrument maker, scientific instrument maker, British Dollond, Peter 1731 - 1820
1588-1653, mathematical instrument maker, sundial maker, London, England, English Allen, Elias 1588 - 1653
1652-1733, active 1700-1733, mathematical instrument and sundial maker, Paris, France, French Bion, Nicolas 1652 - 1733
active 1788-1817, mathematical, philosophical (globes) & optical instrument maker, English; British Adams, Dudley 1760 - 1830
active 1851-1899(?), optician, meteorological, mathematical & philosophical instrument maker, London Pastorelli and Company 1851 - 1899
active 1865-1900, mathematical & drawing instrument maker, London, England Stanley, William Ford 1829 - 1909
1808-1914, optical, mathematical & philosophical (globes) instrument makers, London, England, British Carpenter and Westley 1808 - 1914
active 1805-1822, optical, mathematical & philosophical instrument maker, British Beale, John 1805 - 1822
active 1722-1747, mathematical instrument maker, Strand, London, England Sisson, Jonathan 1690 - 1747
active 1830-1859, optical, mathematical & philosophical instrument maker, English; British Ross, Andrew 1798 - 1859
active 1853-1921, optical, mathematical, philosophical & electrical inst. maker, London, England Elliott Brothers 1853 - 1921
active 1851-1875, optician, mathematical & philosophical instrument maker, Liverpool, England A Abraham and Company 1851 - 1890
active 1749-1783, mathematical instrument maker, Strand, London, England Sisson, Jeremiah 1720 - 1783
active 1834-1851, optician, magnetician, mathematical instrument maker; philosophical instrument maker; engineer, Irish Clarke, Edward Marmaduke 1806 - 1859