'London model 29' monocular microscope by R. & J. Beck Ltd.
1925-1949 (estimated)
Ross's monocular microscope
1843
Monocular microscope
Monocular Microscope used at the Common Cold Research Unit in England, 1946-1960
1946-1960
Compound monocular microscope, Europe, 1681-1720
1681-1720
Lynx monocular microscope engraved "No.2 J.R.Baker"
1960-1970
Compound monocular microscope in case by Powell and Lealand
1845