Johnson Artificial Light Exposure Calculator, associated with a Agilux flashgun..
Johnson
Category
Photographic technology
Date
Unknown
Materials
Plastic, Metal
Measurements
3 mm (Height); 66 mm (Diameter)
Collection
Fox Talbot Museum, Wiltshire
NT 1525606.8
Summary
Johnson Artificial Light Exposure Calculator, associated with a Agilux flashgun. Ivory coloured plastic dial with aperture from 2 - 16 and articial light wattage and distance printed on one side. There is a slot through which shutter speed is shown on a moveable dial. On the reverse is a diagram showing lamp to subject angle and film speed.
Makers and roles
Johnson, manufacturer