amounting to 39 workers in all. For several weeks, after reaching the Middle Point, the two surveyors worked their way north (3'36'6' west) on a preliminary survey to mark the main points to another point they determined intersected the 12-mile circle. They then resurveyed south, back to the Middle Point, reaching it on September 25. During the resurvey, they found they were only two feet, two inches off. The north tangent line bisected the 12-mile circle at mile post 82. From that point, Mason and Dixon were instructed to extend the line an additional five miles straight north to latitude 39'43' north, establishing the west line at marker 87, called the in-state corner marker. When the line was surveyed it crossed to the inside of the arc line. The bulge created by the arc circle gave an additional 13 acres to Delaware.