Silver microscope by George Adams, c. 1761.
1763
1763
1752
1745
1720-1730
1671-1700
1720-1730
1671-1700
1665-1675
1985
1835
1870-1888
1885
1986
1801
1957
1994
1695-1705
1670-1675
1885
1825-1835
1971-1974
1857-1869
circa 1960-1969
circa 1965-1974
1720-1730
1989-1990
1900-1914
1960
1765-1775
1745-1755
1870
1884
1810-1820
1680
1950-1959 (estimated)
1860-1876
1728-1730
1974