Dellebarre type microscope
1790-1800
Botanic microscope ("flower") in red leather case
1820-1850
Gould microscope (unsigned) in red leather case
Wollaston type camera lucida with Ross lenses
1851-1900
Camera lucida, Wollaston style, with red leather case
1840-1860
Withering botanic microscope in red leather-covered case
Folding hand microscope in pasteboard case covered with red leather
1801-1830
Lens in ivory mounting
1830-1870
Wollaston type camera lucida by Watkins & Hill
1836
Perspective tracing instrument
1820-1840