Hilger and Watts Limited
1948 - 1969
J H Steward Limited
R and J Beck Limited
1867 - 1968
Elliott Brothers
1853 - 1921
Emil Busch AG
1845
Carl Zeiss, Jena
1846
Thomas Armstrong and Brother
1868 - 1968
Cooke, Thomas
1807 - 1868
Hilger, Adam
1839 - 1897
Lerebours, Nöel Marie Paymal
1807 - 1873
Jecker, Francoise-Antoine
1765 - 1834
Ross Limited
1897 - 1948
Maudslay, Henry
1771 - 1831
Prazmowski, Adam Jozef Ignacy
1821 - 1885
James Swift and Son Limited
1857 - 1969
Loft, Matthew
1697 - 1747
Hadley, John
1682 - 1744
Chevalier, Vincent Jacques Louis
1770 - 1841
Mittsdorfer, Johan Georg
1711 - 1756
Lerebours, Nöel Jean
1761 - 1840
Duboscq, Jules
1817 - 1886
Campani, Giuseppe
1635 - 1715
Cole, Benjamin
1695 - 1766
Burlini, Biasio
1709 - 1771
Simms, William
1793 - 1860
Barnett, Thomas
1768 - 1816
Browning, John
1830 - 1925
Chevalier, Charles Louis
1804 - 1859
Hilger, Otto
1850 - 1902
Hughes, Henry
1835 - 1875
Newman, John Frederick
1783 - 1860
Grubb, Sir Howard
1844 - 1931
Watkins & Hill
1818 - 1856
E Leitz
1869 - 1987
Adam Hilger Limited
1904 - 1945
Ross and Company
1859 - 1897
Adams, George
1750 - 1795
Cuff, John
1708 - 1772
Short, James
1710 - 1768
Abraham and Dancer
1841 - 1845
Dollond, George
1774 - 1852
Dollond, Peter
1731 - 1820
Martin, Benjamin
1705 - 1782
Powell, Thomas Hugh
1834 - 1925
Nobert, Friedrich Adolph
1806 - 1881
Steinheil, Carl August
1801 - 1870
Adams, Dudley
1760 - 1830
Repsold, Adolf
1806 - 1871
Beck, Joseph
1829 - 1891