Check the listing for details. Humphrey 599 Autorefractor Keratometer User Manual PDF. Condition: New. Listed at 35.00 USD. This is a 45 page user operation guide for Humphrey 599 Automatic Refractor Keratometer in PDF. This is English edition only. Humphrey 599 Auto refractor User Manual The PDF manual instructs you how to properly position the patient, take refractory reading, and more. This bid is for the pdf version and will be email directly to buyer. No Shipping. "The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies. If so, do not bid on this item unless you are an authorized purchaser. If the item is subject to FDA regulation, I will verify your status as an authorized purchaser of this item before shipping of the item." If you have questions about legal obligations regarding sales of medical devices, you should consult with the FDA's Center for Devices and Radiological Health: http://www.fda.gov/cdrh/devadvice/ http://www.fda.gov/cdrh/industry/support/index.html Phone number: 800.638.2041 email: dsmica@cdrh.fda.gov Thank you for your cooperation.