US Historic Survey Stones and Monuments - USCGS West Line Stone ...
USCGS West Line Stone 216, 1902, PA-MD, is a 10-inch by 10-inch dressed white marble (saccharoidal dolomite or magnesian marble) shaft that projects 18 inches. In 1900 – 1903, W.C Hodgkins of the US Coast & Geodetic Survey (USC&GS) set this stone to mark the line as originally surveyed by Charles Mason and Jeremiah Dixon in 1767. It is located on private agricultural property about 1,500 feet north of the end of Garletts Road, about 4.1 miles southwest of Addison, PA, about 2.8 miles east-southeast of Markleysburg, PA, and on the Fayette County, PA, - Garrett County, MD, boundary line. It is labeled as marker number 216 (from the east end) of the PA-MD boundary. It is actually 192.54 miles west of the MD-PA-DE tri-state boundary intersection point at BOUNDARY MON 87 DE MD PA = RM2, PID = JU3841. The stone is in neither the National Geodetic Survey nor Geocaching databases. Mason and Dixon first surveyed this section of the West Line on or about August 12, 1767, and finalized the position of the line on or about November 7, 1767. They did not set any stone monuments west of Sideling Hill (at about Mile 132) due to the absence of wagon-passable roads in the area. The existing stone was set in 1902. It was quarried, dressed and inscribed specifically for the 1900 – 1903 re-survey. The stone resembles a Mason-Dixon intermediate mile marker (which would normally mark a mile point not divisible by 5), and is in fair to good good condition. It has a cut “P” on the north face, a cut “M” on the south face, the date “1767” cut into the east face, and the date “1902” cut into the west face. The top is clearly pyramidal (the apex rising about three inches above the plane of the base – a slightly greater pitch than on the original Mason-Dixon stones) but the apex has been flattened with about one inch of the stone removed.
Carsonite Survey Witness Posts - Bookshelf
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Carsonite Boundary Marker Posts | Carsonite Witness Posts
Berntsen International, Inc. is a major manufacturer and supplier of all types of markers, including survey markers, survey monuments, utility markers, rebar caps, ...
Carsonite Composites Marking Products
Carsonite posts are built to withstand impacts, harsh weather, corrosive elements and UV exposure. ... Commonly used as a survey marker and witness or monument marker. ...
Geocaching > Benchmark Hunting > Benchmark Details
Geocaching is a treasure hunting game where you use a GPS to hide and seek containers ... 1 foot west of a carsonite witness post. 4 inches below ground level covered by dirt. ...
Witness Post photo - Groundspeak Forums
To those that are looking for a sample of a witness post, here is one marking a 1934 BM. DustyJacket ...If life was fair, a banana split would c...
DEPARTMENT OF NATURAL RESOURCES GENERAL RECORD OF SURVEY ...
guided by the State of Alaska's Survey and Platting Regulations, the provisions ... carsonite witness post six feet long, with four feet protruding ...