Anleitung zur Feststellung der Farbentüchtigkeit / von J. Rosmanit
A 1914 German manual on colour vision testing by J. Rosmanit, published in Leipzig and Vienna by Franz Deuticke for ophthalmologists and clinicians examining colour perception. Its plates are charts of spectral sensitivity curves plotted across labelled bands from red through orange, green and blue to violet, with wavelength values in nanometres, drawn in red, blue and black lines over graph grids. A designer might take the clean, technical plotting style, the colour-coded curves and the tidy wayfinding of the axis labels.
