NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: GPS selective availability
From: John D. Howard
Date: 2018 Sep 22, 12:38 -0700
From: John D. Howard
Date: 2018 Sep 22, 12:38 -0700
Geoffrey,
The UK is not unique in having benchmarks. My son-in law is a surveyor and uses many such benchmarks ( monuments ) in his work. He and his co-workers will update the position information on older monuments that they find in remote areas.
I own land in a remote area of Wyoming that has a 1940's bronze plate set in an concreat pillar. My son-in law and I remesured the cooridants using the latest gee-wiz GPS equiptment and know the position down to inches. So, if you are ever near Chugwater, Wyoming and need a fix, let me know. :-)
John H.
