This compound microscope, of the type made by Giovanni Battista Amici, is mounted on a tripod in which the illumination mirror is inserted. The limb supporting the body-tube is fastened to the tripod. The stage support fitted with a condenser slides on the limb. Coarse focus is by adjusting the stage vertically by rackwork. Fine focus is by a vertical screw. The body-tube is angled and joined to the support by a total-reflection prism that deflects the rays from the objective into the eyepiece. Two illumination prisms are mounted on articulated arms. The box contains six objectives, an eyepiece, a camera lucida, and other accessories for handling specimens.