Kodak Color Print Viewing Kit R-25

Vintage Kodak Colour Filter Print Viewing Kit R-25 - set of six colour print viewing cards Red, Green, Blue, Yellow, magenta and Cyan, each with three values 10, 20 and 40 to help you evaluate colour balance of a test print when using RA4 colour paper . Could also be used with modern digital printer to see what colour cast the print has.