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    Re: Making an artificial horizon, and leveling thereof
    From: Paul Hirose
    Date: 2011 Jan 22, 21:19 -0800

    If two observations were averaged, with the floating mirror turned 180° 
    in azimuth after the first, wouldn't a true altitude reading be 
    obtained? The measurements might even be used to determine the amount of 
    dislevelment for the purpose of improving the balance of the mirror.
    
    It might be difficult to get a mirror to float at a desired orientation, 
    though. I have no intention of trying this.
    
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