So I have a War department map for a 66 acre parcel, made in 1947. It has about 20 calls on said map. So I go to put it in the computer, the thing closes less than 0.01'. Just nice to run across these once in a while.
Great works of fiction are always fascinating. They must have been using logarithm tables to 12 decimal places.
I don't know. I worked on a survey close to here from the 20's and it closed out great. It called for fence posts. I found holes in the ground with concrete around them. All of them fit pretty much perfect. (0.04')
Thats like GCDB coors. out to 12 places with a 300 ft error ellipsoid.
U.S. Army Corps of Engineers likely required multiple angles, inside and outside, balanced angle closure and transit adjustment routine on the traverse. Similar standards on any side shots and boundaries computed from corner coordinates.