Photo Tower Triangulation Report
way
Pacific Southwest Region
photo tower to the Zero points.
The values are listed as computed from the
control network and also from check computations based on observations made
at the structure sites.
This report is included.
Adjusted Data
Adjusting of the expanded scheme has been completed, and the adjusted
values are included in this report.
The value of the length of each line is
independent of the route followed in the computation.
All observations, inoluding the cheok observations at the structure sites,
were evaluated and used in the adjustments.
While this data varies from the
values given in the photo tower triangulation report, the differences are small
and assure that the values given in this report are within requirementa.
In the interests of economy, these computations are not included in this
report.
The sketches included record the adjusted values determining the
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” Reproduced from ¢h e-oldings of the National Archiy es
A report was issued on May 18, 1951, inoluding the relation of the
inter-relation of the various stations.
The computations and field notes will be a part of the permanent survey
reoords at the jobsite.
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