... .Resolution:1um,5um,0.1um,0.2um,0.5um 3.digital readout:2M,3M,2G,3E,2L,3L linear scaleMODEL:DC10/DC11 ... (0.010mm)Optical grating measurement systerm:Transmission infrared optical measurement system,infrared wave length:880mmResolution :1um,5umMaximum working speed:20m/mm ...