Hugo de Wijs, Vianen, The Netherlands. Stereoscopic display for stereoscopic slides 35 mm x 101 mm and 41 2 x (5 x 5 cm), high-quality eye with a focal length of 60 mm and diameter 3 cm opening, rack focus, interocular adjustment. The Rolls-Royce between stereoscopic viewers 35 mm. Measures Viewer / Glass 4,5x10,5
