TUALATIN, OR – CUI Inc announces the release of the MES3 series, the latest in their line of high performance micro optical encoders. Claimed to be the world’s smallest shaft-type optical encoder, the MES3 has a 5 mm body diameter and a 1.5 mm shaft diameter. The series is ideal for use in medical and robotics applications where size is critical. Smaller than a pencil eraser, it is able to provide very precise position and speed information in motion control systems, rivaling the performance of encoders more than three times its size. The MES3 is available with resolutions of 64 or 1024 PPR with an option of line driver or open collector output signals. Additional features include an operating temperature range of 0~60°C and max speed of 6,000 RPM.