Boxfoot Culpeper microscope, with major portions missing, English, mid 18th century Boxfoot Culpeper microscope 1731-1770
Italian boxfoot microscope mid 18th century, said to have been used by Spallanzi from the Nachet collection Italian boxfoot microscope mid 18th century 1731-1770
Continental boxfoot microscope, mid 18th century Continental boxfoot microscope, mid 18th century 1731-1770