"Insectoscope Dit De Raspail Datable Around 1840, Also Known As A Seed Microscope."
Insectoscope called "Raspail model",also known as a seed microscope.Brass and glass.
Good condition.
Dimensions: heights of 6.5 cm (closed) and 11.6 cm (open).
Paris datable around 1840.
This type of pocket microscope/insectoscope was used in the field for the observation of seeds and insects.