Request Infoattocube systems AGWith the introduction of the ANT200/NUM, attocube systems AG has expanded its line of stable and compact nanopositioning stages. The linear horizontal stepper positioner has a 28-mm-diameter center hole that makes it suitable for optical transmission experiments. Measuring 45 × 45 × 11 mm, it can be integrated easily into existing microscope setups and into other instrumentation in space-limited applications. Its noncontact optoelectronic encoder enables ultraprecise closed-loop operation with sensor resolution of 50 nm. 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