[f. CHROMATO- + -METER.] A measure or scale of colors.
1835. Henslow, Descr. & Phys. Bot., 200. These may be arranged in a diagram termed a Chromatometer.
1858. Whewell, Hist. Sc. Ideas, I. 341 (L.). And thus … the prismatic spectrum of sunlight became, for certain purposes, an exact chromatometer.
