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    Re: Box Sextant and "Natural Tangents to a Base of 100"?
    From: Bill Morris
    Date: 2012 Feb 20, 11:04 -0800

    My suggestion:

    Stand at the base of a church tower/ tree/ mast etc. Pace out 100 metres and measure the angle between a point on the wall at the height of your eye and the top of the tower. Then the height of the tower is the height of eye plus (100 x tan of angle measured) or, since the pacing is only approximate, neglect the height of eye bit.

    Or set the sextant to 45 degrees and pace backwards (avoiding open manholes, trenches, parked baby buggies etc) until the base and top coincide in the sextant. Since tan 45 = 1, the number of paces gives you the height of the tower.

    Bill Morris
    Pukenui
    New Zealand
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