@Dutchy,
timetable updated
[dutchy : surveyors work for commercial companies - "fence viewers" are locally appointed officials to mediate disagreements between neighbours .
original meaning :
Each year, New England towns appointed a variety of minor officials. One of these offices was that of fence viewer, who was responsible for inspecting each resident's allotted portion of the common fence and any particular [individual] plots to see that regulations were followed.
The fence viewer is not a surveyor and is not concerned with the location of a line. He, or the board of two or three, looks at the line between neighbors to decide who takes care of his half. An attempt is made to divide the responsibility equally, as fencing over rock ledge is more difficult than fencing meadowland. The rule was that a line fence must be "hog tight and horse high." Good fences did make good neighbors, but good neighbors made good fences, and back when everybody had livestock it was equally important either way.]