A rare mid 18th Century brass microscope compendium, with signature CUFF London, the solar microscope with main plate adjustment tangent gear and rotation screw, over mirror plate, with cylindrical body tube; the interchangeable screw barrel fitting with cylindrical barrel and rack-and-pinion adjustment screw, sprung stage, with screw thread handle; the scroll pillar with flat tripod stand, the foot mounted with a concave mirror, the screw barrel located to the stand by 'butterfly' nut and screw-thread handle, with accessories including two single brass-cased wet cells, a four-aperture wet cell, and two ivory slides in leather-covered paper card container, in fitted green velvet-lined fishskin covered case with brass fittings - 11in. (28cm.) wide