Folding hand microscope in case
1800-1810
Box of accessories to solar microscope
1750-1800
Camera lucida, Wollaston type, with black fish-skin case
Aquatic microscope with box as base
1770-1790
Compound monocular microscope by Benjamin Martin
1751-1780
Perspective tracing instrument
1820-1840
Wollaston type camera lucida
1801-1850