This microscope is a Cary-Gould type simple plus compound portable microscope system. It is unsigned, but undoubtedly made and sold in France around 1830 by Charles Gavard of Paris.
  The microscope is in fine and working condition. It preserves its two objective lenses, stage, and original mirror. Accessories include a black copper stop that can be placed over the mirror to limit outer light rays, three hand-cut glass slides of different lengths, two round glass slides and one depression slide for aquatic observations. In addition included are two sample slides mounted in boxwood. One slide has peacock feathers and agate, the other a flea, louse, and a transverse section of wood. The microscope can be disassembled and stored in a mahogany traveling case that is lined in red velvet.
The microscope preserves its original French illustrated booklet printed “dessiné et gravé par le diagraphe et pantographe Gavard rue du marché St Honoré, 4” ("drawn and engraved by the diagrapher and pantographer Gavard rue du marché St Honoré, 4"). This Gavard is Charles Gavard (1794-1871), inventor of the digraphe, used to create accurate reproductions of paintings, and a great promoter of several forms of pantographs modified by himself. We know that Charles Gavard made and sold some microscopes which could be adapted to his diagraph as described in his ”Instruction du diagraphe” published several times during the 1830s’. So, it is certain that this microscope was made and sold by Charles Gavard, based on the English design of Gould.
The microscope body is 12cm x 2.0cm. The support pillar is 9.5cm.