Gossen Sixticolor color meter
Gossen Sixticolor color meter is a meter to measure the color of the
light and to calculate the correct filter to compensate the used film
with the measured light. The measurement is done by the use of measuring
2 colors, red and green.
On June 1957 P. Gossen & Co GMBH in Erlangen filed a patent at the USA
patent office for an invention of an apparatus called 'Direct reading
color temperature meter' under patent. Under number 2.972.282 this
patent has been registered At the USA patent office. The inventors are
Hans Fosterling and Helmut Peter for P.Gossen GMBH.