Details
A solar microscope by Jones,
signed W. & S. Jones, 30, Holborn, London, with rack and worm adjustments to mirror, two-piece body tube with rack focusing, three condenser lenses in slides and slide of six projection lenses, in flat mahoany case with two shutter screws, forceps, wet slide and ivory slides -- 11in. (28cm.) wide, early 19th century
signed W. & S. Jones, 30, Holborn, London, with rack and worm adjustments to mirror, two-piece body tube with rack focusing, three condenser lenses in slides and slide of six projection lenses, in flat mahoany case with two shutter screws, forceps, wet slide and ivory slides -- 11in. (28cm.) wide, early 19th century