Filar micrometer by William Herschel, 1780-1800
1780-1800
1780-1800
1780-1800
1783-1785
1795-1816
1794
1839-1860
1780-1800
1780-1820
1800
1791
1899
1812
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1770-1820
1785
1780-1820
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1800
1780-1820
1780-1820
1770-1820
1770-1820
1780-1820