Along survey lines, monumentation was much less elaborate, consisting primarily of only the blazing and some very simple scribing of trees directly on, or very close to, the survey line.
32.
Burt devised the solar compass so that garbled readings caused by the Earth's magnetic field would be cleared up and so that north-south survey lines could be easier to find.
33.
It was defined as the meridian ( north south ) line from the eighty-second milestone of the Pennsylvania New York survey line at 76?57'58 " W northward to Lake Ontario.
34.
Mason's and Dixon's actual survey line began to the south of Philadelphia, Pennsylvania, and extended from a benchmark east to the Delaware River and west to what was then the boundary with western Virginia.
35.
Taking uncertainties in depth measurements and position estimation into account the raw data of the 2010 bathymetry of the Challenger Deep vicinity consisting of 2, 051, 371 soundings from eight survey lines was analyzed.
36.
When this survey line was extended eastward, the boundary was determined to fall on the coast at Casco Bay, and the colony thus claimed most of what is now southern Maine and New Hampshire.
37.
Historically the southern portion between Regina and Saskatoon was Provincial Highway 11, and followed the Dominion Survey lines on the square, and the northern portion between Saskatoon and Prince Albert was Provincial Highway 12.
38.
Naughton is also home to historical plaques commemorating Salter's Meridian, a survey line which resulted in the first known evidence of the Sudbury area's massive mineral deposits, and the Hudson's Bay Company's historic Whitefish Lake Trading Post.
39.
A widely accepted view, but not the official view, states that the road was set out by two surveyors, one moving north and the other moving south, each of whom set out the road to the right of their survey line.
40.
A "'prismatic compas "'is a navigation and surveying instrument which is extensively used for determining course, waypoints ( an endpoint of the leg of a course ) and direction, and for calculating bearings of survey lines and included angles between them.
