ObjectsViewing Record 21 of 49
Previous Record Next Record
Switch Views: Lightbox | Image List | List
visual field test
Europe: United Kingdom
Hand-held projection scotometer. Grey metal shaft and bulb unit. Rotatable disc containing seven apertures of varying diameters. Second disc containing clear apertures and red/green filters. Removable projection lens unit. Brown handle with black plastic control switch.With black crackled enamel transformer, including indicator bulb, red/black flex and modern plug.
Gift of Arthur C. Mawson in memory of H.P. Southcott, 2001