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    Ratio vertical distance approximations
    From: Doug Royer
    Date: 2003 Apr 21, 17:25 -0700

    I've been thinking over the last few days about a method to measure vertical
    distance off an object using ratio.I'll throw this out to you guys to see if
    you think it has merit.I was thinking and schemeing while out in the
    mountains about measureing distances by vertical sextant angles.I'm thinking
    of useing unknown heights of objects over unknown distances.I was wondering
    if one could use the ratio of a known height and distance and an unknown
    height to find the distance to the unknown object.
    Here is what I was thinking: Take a rod of a measured height (say 24
    inches)and set it a known distance(say 60 inches)from yourself.Use the
    sextant to measure the angle.Pick an object in the distance(you don't know
    its' height or distance from you)and take its' angular measurement.By useing
    the ratio of the 2 do you think it possible to calculate the distance?I'll
    do some work on this tonight and see if I can get it to work in theory and
    bring it to you tomorrow for your thoughts.I can't stop thinking about this
    all day today.

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