From Gould, C. 1827. The Companion to the Microscope And a Description of the C. Gould's Improved Pocket Compound Microscope, Which has all the Uses of the Single, Compound, and Opaque Microscope.*
Gould pocket microscope.
Accessories and arrangement in the case.
*Turner, G L'E. 1989. The Great Age of the Microscope. IOP Publishing Ltd. The Gould-Type of Microscope, pp75–85.