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Strictly Surveying
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Last winter, I bought a mirror, tribrach adaptor, and tribrach on Ebay. Turns out it is a Geodimeter tribrach for a 600 series inst. I've never adjusted this type of tribrach and was wondering if anyone out there has a sheet on them. Thanks in advance.
M
Posted : March 25, 2011 7:55 pm
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is this what you describe?
1. level across both axises
2. turn 180
3. adjust out half the error
4.turn 180
5. relevel
6 turn 180 repeat adjustment till you can turn the adapter and the bubble stays centered.
Posted : March 25, 2011 9:39 pm
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Someone -- I regret to say that I've forgotten who -- was kind enough to provide the sketch below when I posted a similar question a year or two ago:
Posted : March 25, 2011 10:59 pm
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Thanks Jim, That's what I was looking for.
Posted : March 26, 2011 8:38 am
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You will find a long allen wrench really simplifies things too.
KS
Posted : March 26, 2011 8:40 am