Solar Microscope in Case, by Adams, London, Late 18th Century

The brass body screws into the back plate. A rectangular mirror is set on the rear of the brass plate and two wing-nuts on the front adjust the position and angle of the mirror. The slide carrier screws onto the other end of the body tube. It consists of an outer cylinder with two rectangular sections cut away and a thread in the end to take the projection lens. There is also a dovetail slot to take a brass slide with six objective lenses. A rack and pinion, for focusing, extends the outer cylinder from an inner cylinder that holds the stage and an third, spring mounted, cylinder. The stage is two discs that are pushed together by the spring cylinder. The accessories are a projection lens, two shutter screws, a brass wet cell, brass forceps, an ivory talc box, a fitting to show opaque specimens, a cylinder with a spring clamp, five ivory sliders and three wooden sliders. The fitted case is mahogany with green felt facing the supports.