Hi Bruce
Gary LaPook wanted a very long baseline with the bubble sextant measured
angle to improve the accuracy of his HoE, in his "Dip Meter Again" post. I
think that's one of the reasons why he did it that way, using Google earth.
You can use a lesser distance because of the greater angular precision of
your theodolite. Hence the 200' restriction of your tape isn't a restriction!
Nicely done.
The bubble sextant, of course, cannot really compete with a theodolite for
angular measure and thus HoE determination at a distance of 200'. Note that a
larger population of bubble sextant owners are in the audience than theodolite
owners. So for the benefit of those who have one and not the other, using a
long baseline helps when determining HoE by bubble sextant.
Brad
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