Request InfoPrecision Laser Scanning LLCPrecision Laser Scanning LLC offers a 70,000-RPM polygon scanner with a sealed optical window for noise isolation. Sealing the mirror housing keeps out contamination, prolonging the service life of the optics. Rated for 200,000 start-stop cycles, the air bearing scanner has a long life. The standard model has a 72-facet polygon with an inscribed diameter of 2.5 in. and a thickness of 0.25 in. 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