- M-DRO 670mm (26 3/8 inch) Reading Length Linear Optical Encoder with 5um ResolutionPart No: DRO-MD60-670-5U£131.96The M-DRO MD60 Standard linear optical encoder with 670mm (26 3/8 inch) reading length. 5 Micron (0.005mm) resolution. Industrial standard EIA422 differential quadrature output signal. Suitable for a wide range of machines tools, CNC feedback, jigs and metrology applications. Learn More