3nh,The Chroma Meter,CL-200A

The Chroma Meter CL­200A is a compact, light weight, handheld instrument for measuring the color and illuminance of light sources (including new LED and EL light sources) and displaying the results in terms of tristimulus values, illuminance, chromaticity, dominant wavelength, excitation purity, correlated color temperature, and difference values from a target.