... of photoelectric effect & D65 light source (R457) and with 45/0 as a illumination condition. Meanwhile, except solution or liquid samples, this ... sheet, clay, etc.Characteristics:² Compact in size, novel in design & LCD display with suitcase package..² Succinct operation, suitable measurement range & higher ... (Portable Whiteness Meter (WSB-1) ;Measurement Range:0-199;LCD display with suitcase package)