Author Topic: Something provided for signals  (Read 1247 times)

AvastMH

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Something provided for signals
« on: May 11, 2015, 09:34:13 pm »
Hello All,
Please - could anyone work out what was bought for signals (top of page on the right). It's 3080 ft of something. (Patterson 09/06/15 in Ketchikan)
http://oldweather.s3.amazonaws.com/ow3/final/USCS%20Patterson/Book%2021/IMG_7173_0.jpg

Thanks! :D

Janet Jaguar

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Re: Something provided for signals
« Reply #1 on: May 11, 2015, 09:50:34 pm »
rough frame?


I just found the most wonderful string of photos - NOAA explains the use of signals in surveying, and demonstrates all the stuff used between the early 1800s and the 1910s.  Most are from the 1910s, which is right down our alley.
Signals: Flags, Banners, Cones, and Lights Help Direct Surveys:
http://celebrating200years.noaa.gov/magazine/signals/welcome.html

From the sidebar of that article is ...
The Foundations of the National Spatial Reference System:
http://celebrating200years.noaa.gov/foundations/spatial/welcome.html

An Angular Point of View: A Photo Collection Illustrating the History of Theodolites at the National Geodetic Survey:
http://celebrating200years.noaa.gov/theodolites/welcome.html

The Geometry of Making Surveys
http://celebrating200years.noaa.gov/foundations/spatial/side2_spatial.html

and others.  :)

AvastMH

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Re: Something provided for signals
« Reply #2 on: May 11, 2015, 10:21:04 pm »
'Frame' sounds good Janet - thanks!

That survey info is fascinating. I'm going to give it a more thorough go-over soon  :D  Thanks again!