ZB-A colour tester Measure ISO(R457)and Rz,Rx, ... coordinate x10, y10, z10;lightness L*;chrominance a*, b*;chromaticity C*ab;hue angle h*ab;dominant wavelength λd, excited purity ... , color difference ΔE*ab, lightness difference ΔL*, chromaticity difference ΔC*ab, hue difference ΔH*ab, Hunter system L, a,b ... less than 40mmSize and WeightDimension:360*264*400mmNet Weight:23kg ZB-A colour tester--LCD display