A William IV lacquered brass compound monocular microscope by Andrew Pritchard

A William IV lacquered brass compound monocular microscope by Andrew Pritchard, the tripod foot signed 'A. Pritchard, 18 Picket St. London', with rack and pinion focusing and a convex mirror, fitted in a mahogany case, with five drawers containing lenses and accessories, with a paper trade label for Pallant Optician' and a trade label for Andrew Pritchard 'The Natural History of Animalcules', 29cm high, 28.7cm wide.