The Newport PMA10195 PMA10196 Encoded Motorized Actuators with Manual Adjustment are linear actuators from the Newport brand, specifically the NEWPORT VM25 .4 model. These actuators feature encoded motorization for precise movements, along with the option for manual adjustment when necessary. The product is designed for industrial automation and motion control applications, providing a reliable solution for linear motion tasks. These were pulled from a working experiment many years ago and have been in storage ever since. These have sub micron glass scales as encoders. Note that these require a vintage Newport motor controller I'm pretty sure.
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