Martin, L. C. (Louis Claude), Gamble, William · London, Blackie · leaf 131
INSTRUMENTS FOR COLOUR MEASUREMENT 105 widths, sectors, wedges, polarizing prisms, or any other convenient method. The instrument deals directly with transmitted light of … s Fig. 48. — Nutting Colorimeter, Hilger Diagram any colour except such hues as purple. Tn order to deal with purples which cannot be matched, it is necessary to employ another Fig. 49. — Nutting Colorimeter, General View of Apparatus arrangement by which a known intensity of some spectral colour…
Color photography · Color printing · Color
Internet Archive · Gerstein - University of Toronto · Public domain (published before 1931). Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-89-79.webp)
