Patented November 19, 1901

A portable, daylight instrument, adapted to laboratory work
in general, and of especial service in the comparison
of color values. Placed in the course
of Optical Measurements at the
Massachusetts Institute of
Technology

Price, $50

IN PREPARATION

A COLOR ATLAS

Also text-books and models
specially designed
to serve in the education of
the color sense

For comparison purposes, here is the Color Balance illustration (Appendix III) using the colors of your computer monitor (red, green, blue):