Survey Disk - LX2745 - Southington, CT
Posted by: 
neoc1
N 41° 36.086 W 072° 52.706
18T E 676800 N 4607699
This USGS survey disk is easily seen at the second step of the base of a monument dedicated to Amon Bradley located on the Town Green on Main Street, in Southington, CT.
Waymark Code: WMG5BW
Location: Connecticut, United States
Date Posted: 01/15/2013
Views: 7
The bright brass colored survey disk carries the following inscriptions:
U.S. GEOLOGICAL SURVEY
IN COOPERATION WITH THE STATE OF
CONNECTICUT
ELEVATION
ABOVE SEA
168 FEET
80 W 1923
250 DOLLARS FINE
FOR DISTURBING THIS MARKER
My camera was facing northwest when I photographed the Survey Disk embedded in the Amon Bradley Memorial.
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Documented History (by the NGS rom from the Geocaching website)
Location: In HARTFORD County, CT
Designation: 80 W
Marker Type: survey disk
Setting: mat foundation, concrete slab, etc.
Stability: May hold, but of type commonly subject to surface motion.
01/01/1923 by USGS (MONUMENTED)
01/01/1985 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1985 IN SOUTHINGTON. IN SOUTHINGTON, ALONG STATE HIGHWAY 10, ACROSS THE HIGHWAY FROM THE FIRST CONGREGATIONAL CHURCH, IN TOP OF THE EAST SIDE OF THE UPPER STEP OF A GRANITE MEMORIAL TO AMON BRADLEY, NEAR THE NORTH END OF THE SOUTHINGTON GREEN. THE MARK IS 0.61 M ABOVE HIGHWAY.
Control Text
•The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
•The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991.
•The geoid height was determined by GEOID99.
•The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.).
•The modeled gravity was interpolated from observed gravity values.
Condition: Mark found in good condition
Designation: 80 W
Benchmark Agency: U.S. Geological Survey
Monumentation type: Survey Mark
County: Southington, CT
USGS 7.5' Topographic Quadrangle Name (optional): Southington (1992)
Find type: Found by luck/skill/knowledge
Web address of this benchmark's datasheet (optional): [Web Link]
NGS PID: LX2745
Benchmark Agency (if other): Not listed
Monumentation type (if other): Not listed
Special category (optional): Not listed
Special Category (if other): Not listed
Local database's URL (optional): Not listed
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Visit Instructions:
- A closeup photo of the mark taken by you is required.
- A 'distant' photo including the mark in the view is highly recommended. Include the compass direction you faced when you took the picture.
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