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Hello -- I presume by 'non-magnetic' that you mean 'contains no ferrous material.' If you check out http://www.opt.uh.edu/uhcotech/headspot.html and like what you see, you should know -- The main structural components of the HeadSpot are aluminum and polyurethane plastic. True, there are some steel parts, primarily fastening screws. It would be practical to devise a unit, substituting brass or aluminum for the steel parts. If this is of interest, there will be some extra cost associated. If you require *non-conductive* construction, we'll have to contemplate further. Best regards, -- Chris Kuether Instrument Designer Technical Services Manager CollegeOfOptometry, UniversityOfHouston 505 JDArmistead Bldg, Houston TX 77204-2020 vox:(713)743-2049 fax:--2053; [log in to unmask] ---- Remember folks, reality is ANALOG ---- ---- Intolerance will NOT be tolerated ---- -- EYE-MOVEMENT mailing list ([log in to unmask]) N.B. Replies are sent to the list, not the sender To unsubscribe, etc. see http://www.jiscmail.ac.uk/files/eye-movement/introduction.html Other queries to list owner at [log in to unmask]