Designed for environments with 10-9 mBar of pressure, LIK 2 Series supports high and ultra-high vacuum applications where motion feedback is required inside vacuum chamber. Non-contact encoder systems have 20 micron grating period and graduation is applied to either glass or steel scale substrate. Graduation can be ordered with several accuracy grades within range of ±5 to ±1 micron per meter. Scanning units provide 1 V peak to peak or TTL output with resolutions down to 50 nm.