Kaufmann Baby-Cine Posograph exposure calculator, patents by Kaufmann, France. Metal and plastic calculator with factors: Month, time of day, aperture, sunlight condition, state of the sky, subject, filter. Pointer connected through linkages - adjusting one affects the others. Kaufmann Baby-Cine Posograph exposure calculator
Blendux photo-electric exposure meter for cine work, model introduced in 1933 Blendux Photo-electric Exposure Meter 1933
