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A gauge or datum location used for comparisons, surveying or general reference in relation to known values.
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Total Records: 567 Page: 1 of 23 prev<<<[12345678910]>>>next
Image for Aview gallery

NN0.3 km

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U.S. BenchmarksA

in U.S. Benchmarks

One of the more unusual and historic benchmarks located in Hagerstown, MD & dating back to 1877.

posted by: Groundspeak Premium Member Ernmark

location: Maryland

date approved: 1/2/2008

last visited: 2/28/2015

Image for Mile Marker M to B 75view gallery

WW6.3 km

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U.S. Historic Survey Stones and MonumentsMile Marker M to B 75

in U.S. Historic Survey Stones and Monuments

Mile Marker 75 Miles to Baltimore.

posted by: Groundspeak Premium Member Mountain Junkie

location: Maryland

date approved: 3/3/2008

last visited: 4/7/2008

Image for 76 M to B - Huyett, MDview gallery

WW8 km

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U.S. Historic Survey Stones and Monuments76 M to B - Huyett, MD

in U.S. Historic Survey Stones and Monuments

Old stone milepost along US 40 ....76 miles west of Baltimore.

posted by: Groundspeak Premium Member Ernmark

location: Maryland

date approved: 5/18/2007

last visited: 5/2/2008

Image for MASDIX West Line Stone 106, 1767 & 1902, Pennsylvania - Marylandview gallery

NN9 km

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U.S. Historic Survey Stones and MonumentsMASDIX West Line Stone 106, 1767 & 1902, Pennsylvania - Maryland

in U.S. Historic Survey Stones and Monuments

MASDIX West Line Stone 106, 1767 & 1902, PA-MD, is a dressed Portland Stone shaft set by Mason and Dixon in 1767 to demarcate the boundary between PA and MD. The USCGS re-survey of 1900 – 1903 reset the stone.

posted by: Groundspeak Regular Member seventhings

location: Maryland

date approved: 4/4/2007

last visited: 11/3/2011

Image for PennDOT - (I-81 Mi.00.0) - Franklin County, PAview gallery

NN9 km

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U.S. BenchmarksPennDOT - (I-81 Mi.00.0) - Franklin County, PA

in U.S. Benchmarks

Unstamped PennDOT disk on the SW corner of a bridge carrying Mason-Dixon Rd. over I-81 just N of the PA-MD state line.

posted by: Groundspeak Premium Member Ernmark

location: Pennsylvania

date approved: 1/22/2007

last visited: never

Image for USCGS West Line Stone 108, 1902, Pennsylvania-Marylandview gallery

NN9.5 km

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U.S. Historic Survey Stones and MonumentsUSCGS West Line Stone 108, 1902, Pennsylvania-Maryland

in U.S. Historic Survey Stones and Monuments

USCGS West Line Stone 108, 1902, PA-MD, is a dressed Portland Stone monument set in 1902 to supplement Mason and Dixon’s survey of the West Line to demarcate the boundary between PA and MD.

posted by: Groundspeak Regular Member seventhings

location: Maryland

date approved: 3/13/2007

last visited: 5/3/2010

Image for MASDIX West Line Stone 109, 1767, Pennsylvania-Marylandview gallery

NWNW9.8 km

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U.S. Historic Survey Stones and MonumentsMASDIX West Line Stone 109, 1767, Pennsylvania-Maryland

in U.S. Historic Survey Stones and Monuments

MASDIX West Line Stone 109, 1767, PA-MD, is a dressed Portland Stone shaft set by Mason and Dixon during their survey of the West Line to demarcate the boundary between PA and MD.

posted by: Groundspeak Regular Member seventhings

location: Maryland

date approved: 3/13/2007

last visited: 10/21/2009

Image for MASDIX West Line Stone 103, 1767 & 1902, Pennsylvania - Marylandview gallery

NENE9.8 km

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U.S. Historic Survey Stones and MonumentsMASDIX West Line Stone 103, 1767 & 1902, Pennsylvania - Maryland

in U.S. Historic Survey Stones and Monuments

MASDIX West Line Stone 103, 1767 & 1902, PA-MD, is a dressed Portland Stone shaft (made in 1767) set by the 1900 – 1903 resurvey of the Mason and Dixon line to demarcate the boundary between PA and MD.

posted by: Groundspeak Regular Member seventhings

location: Maryland

date approved: 2/6/2007

last visited: never

Image for MASDIX West Line Stone 110, 1767, Pennsylvania-Marylandview gallery

NWNW10.6 km

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U.S. Historic Survey Stones and MonumentsMASDIX West Line Stone 110, 1767, Pennsylvania-Maryland

in U.S. Historic Survey Stones and Monuments

MASDIX West Line Stone 110, 1767, PA-MD, is a dressed Portland Stone shaft set by Mason and Dixon in 1767 to demarcate the boundary between PA and MD.

posted by: Groundspeak Premium Member Ernmark

location: Maryland

date approved: 9/22/2008

last visited: never

Image for MASDIX West Line Stone 102, 1767 & 1902, Pennsylvania-Marylandview gallery

NENE10.6 km

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U.S. Historic Survey Stones and MonumentsMASDIX West Line Stone 102, 1767 & 1902, Pennsylvania-Maryland

in U.S. Historic Survey Stones and Monuments

MASDIX West Line Stone 102, 1767 & 1902, PA-MD, is a dressed Portland Stone shaft (made in 1767) set by the 1900 – 1903 resurvey of the Mason and Dixon line to demarcate the boundary between PA and MD.

posted by: Groundspeak Regular Member seventhings

location: Maryland

date approved: 2/10/2007

last visited: never

Image for MASDIX West Line Stone 111, 1767, Pennsylvania - Marylandview gallery

NWNW11.4 km

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U.S. Historic Survey Stones and MonumentsMASDIX West Line Stone 111, 1767, Pennsylvania - Maryland

in U.S. Historic Survey Stones and Monuments

MASDIX West Line Stone 111, 1767, PA-MD, is a dressed Portland Stone shaft set by Mason and Dixon in 1767 to demarcate the boundary between PA and MD.

posted by: Groundspeak Premium Member Ernmark

location: Maryland

date approved: 9/22/2008

last visited: never

Image for Mile Marker M to B 79view gallery

WW12.9 km

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U.S. Historic Survey Stones and MonumentsMile Marker M to B 79

in U.S. Historic Survey Stones and Monuments

Mile Marker 79 Miles to Baltimore.

posted by: Groundspeak Premium Member Mountain Junkie

location: Maryland

date approved: 3/3/2008

last visited: 4/7/2008

Image for Sixty Miles to Baltimore - Boonsboro. Marylandview gallery

SS16.9 km

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U.S. Historic Survey Stones and MonumentsSixty Miles to Baltimore - Boonsboro. Maryland

in U.S. Historic Survey Stones and Monuments

A perfectly placed stone post accurately surveys Baltimore as 60 miles away can be found on Route 40 - the National Road.

posted by: Groundspeak Regular Member Math Teacher

location: Maryland

date approved: 9/17/2011

last visited: 7/5/2013

Image for Mile Marker M to B 82view gallery

WW17.5 km

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U.S. Historic Survey Stones and MonumentsMile Marker M to B 82

in U.S. Historic Survey Stones and Monuments

Mile Marker 82 Miles to Baltimore.

posted by: Groundspeak Premium Member Mountain Junkie

location: Maryland

date approved: 3/3/2008

last visited: 4/7/2008

Image for Cview gallery

WW17.5 km

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U.S. BenchmarksC

in U.S. Benchmarks

Extremely old benchmark located along the Potomac River & old C&O Canal.

posted by: Groundspeak Premium Member Ernmark

location: Maryland

date approved: 1/2/2008

last visited: never

Image for Washington Monument (JV4689) - Boonsboro, MDview gallery

SESE17.7 km

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U.S. BenchmarksWashington Monument (JV4689) - Boonsboro, MD

in U.S. Benchmarks

It's an NRHP site, a lookout tower, an historical Civil War site, the first ever monument to Washington, a CCC site, an official tourist attraction and OF COURSE, a benchmark.

posted by: Groundspeak Regular Member Math Teacher

location: Maryland

date approved: 8/12/2011

last visited: 10/2/2014

Image for USDI - AT 50view gallery

SS19 km

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U.S. BenchmarksUSDI - AT 50

in U.S. Benchmarks

A US Dept. of the Interior NPS marker near an observation tower at Antietam National Battlefield.

posted by: Groundspeak Premium Member Shorelander

location: Maryland

date approved: 8/31/2006

last visited: 8/26/2006

Image for Antietam Creek Streamflow Gage House - Sharpsburg MDview gallery

SS21.2 km

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River GaugesAntietam Creek Streamflow Gage House - Sharpsburg MD

in River Gauges

Streamflow at Antietam Creek was first measured in 1897. This streamflow-gaging station was built in 1933. The nearby control dam was added in 1934.

posted by: Groundspeak Premium Member akern.geo

location: Maryland

date approved: 11/17/2009

last visited: 8/15/2011

Image for Antietam Aquaductview gallery

SS24.9 km

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U.S. BenchmarksAntietam Aquaduct

in U.S. Benchmarks

Benchmark in stone construction of the Antietam Aquaduct

posted by: Groundspeak Premium Member Red Starred

location: Maryland

date approved: 7/6/2012

last visited: 2/23/2014

Image for D 152 RESET 1977  -  Mercersburg, PAview gallery

NWNW26.1 km

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U.S. BenchmarksD 152 RESET 1977 - Mercersburg, PA

in U.S. Benchmarks

Reset disk located in the center of a concrete headwall along the NW side of Mt. Pleasant RD.

posted by: Groundspeak Premium Member Ernmark

location: Pennsylvania

date approved: 5/21/2008

last visited: never

Image for Zion Lutheran Church Steeple (JV4618) - Middletown, MDview gallery

SESE26.6 km

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U.S. BenchmarksZion Lutheran Church Steeple (JV4618) - Middletown, MD

in U.S. Benchmarks

The tallest structure in town, a church steeple, doubles as a benchmark.

posted by: Groundspeak Regular Member Math Teacher

location: Maryland

date approved: 8/24/2011

last visited: 7/15/2011

Image for AFRICA AZ - Franklin County, PAview gallery

NWNW27.2 km

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Azimuth BenchmarksAFRICA AZ - Franklin County, PA

in Azimuth Benchmarks

Azimuth Mark associated with triangulation station AFRICA (JV4765) located 3 miles SW of Mercersburg, PA.

posted by: Groundspeak Premium Member Ernmark

location: Pennsylvania

date approved: 5/20/2008

last visited: never

Image for Milestone PK - Middletown, MDview gallery

SESE29.5 km

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U.S. Historic Survey Stones and MonumentsMilestone PK - Middletown, MD

in U.S. Historic Survey Stones and Monuments

A pale, tan milestone sites on the roadside on Route 40/Old National Pike. The milestone is on the right or north side while traveling northwest on the way to Sharpsburg/Antietam.

posted by: Groundspeak Regular Member Math Teacher

location: Maryland

date approved: 8/11/2011

last visited: 7/5/2013

Image for P.D.H. Elev. -  Hollow RD at Licking Creek - Franklin County, PAview gallery

WW30.4 km

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U.S. BenchmarksP.D.H. Elev. - Hollow RD at Licking Creek - Franklin County, PA

in U.S. Benchmarks

Disk located on the SE wingwall of a bridge carrying Hollow RD over Licking Creek - about 200 feet N of the PA - MD line.

posted by: Groundspeak Premium Member Ernmark

location: Pennsylvania

date approved: 8/3/2007

last visited: never

Image for Maryland Heights Reset RM 1 - Washington County, MDview gallery

SS33.3 km

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U.S. BenchmarksMaryland Heights Reset RM 1 - Washington County, MD

in U.S. Benchmarks

Reference Mark set in a boulder E the Stone Fort Trail - NE of Harpers Ferry.

posted by: Groundspeak Premium Member Ernmark

location: Maryland

date approved: 4/10/2010

last visited: never

Total Records: 567 Page: 1 of 23 prev<<<[12345678910]>>>next
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