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    Re: A guide to AH use
    From: Ken Muldrew
    Date: 2014 Oct 3, 13:56 -0600
    With fairly crude construction work (woodworking tools only; no machining equipment), the floating AH that I described in those earlier posts gave errors in altitude of up to 3'. That isn't good enough, but with careful construction and the use of a wetting agent, I don't think 15" accuracy is out of reach. 

    On 2014-10-03, at 1:35 PM, Randall Morrow wrote:

    The accuracy needed is beyond the capabilty of any mirror floating technique.
    Randy

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