1 sec vs 10 sec theodolite
1 sec vs 10 sec theodolite
(OP)
What is the accuracy difference between a 1 second vs a 10 second theodolite. I'll be locating trees on a 1 acre tree farm.
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1 sec vs 10 sec theodolite
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RE: 1 sec vs 10 sec theodolite
1 second at 100 ft is about 0.006 inches
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Eng-Tips Policies FAQ731-376
RE: 1 sec vs 10 sec theodolite
RE: 1 sec vs 10 sec theodolite
Delta=Distance x tan (angle)
For 300 ft, 1 second:
Delta=300 x tan (1 sec/3600)=0.0015 ft = 0.02 inches
RE: 1 sec vs 10 sec theodolite
RE: 1 sec vs 10 sec theodolite
Oh, and don't forget to use an offset measurement to get the center of tree measurement.