Thistestgivesyouaneasy-to-administerbuthighlyeffectivemethodformeasuringanyindividual"scolorvision.Usedbythegovernmentandindustryforover40years,thetestconsistsoffourtrayscontainingatotalof85removablecolorreferencecaps(incrementalhuevariation)spanningthevisiblespectrum.Colorvisionabnormalitiesandaptitudearedetectedbytheabilityofthetestsubjecttoplacethecolorcapsinorderofhue.WealsoincludeWindows?-basedPCscoringsoftware.Thefourtraysareboxedinahandsomecarryingcase.ThetestmustbeadministeredunderdaylightconditionssuchasthatprovidedbyGretagMacbethSpectraLight?andJudgeviewingboothsortheSol-Sourcedesklamp.