Simple viewer, in case, English, mid 19th century Simple viewer, in case, English, mid 19th century Microscopy (Wellcome) 1830-1870
Screwbarrel and aquatic microscope in fishskin case, by Dollond, London, 1761-1780 Screwbarrel and aquatic microscope in fishskin cas Microscopy (Wellcome) 1761-1780