Stereoscope on 'twist' stand. Brewster type viewer. Rack and pinion focusing on sliding box carrying two non prismatic round viewing lenses. Hinged lid with stay, mirror missing. Ground glass screen. Pedestal with spiral stem. Overall height: 355 mm; stand: 260 mm 144 mm; viewer: 115 mm x 205 mm x 162 mm. Brewster-type stereoscope on twist stand