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NGS Calibration Baseline – Disk 150 M
Posted by: Groundspeak Premium Member 8Nuts MotherGoose
N 37° 51.876 W 089° 13.965
16S E 303598 N 4193141
Quick Description: This disk is one of the points in the National Geodetic Survey Gerstenschlager Calibration Baseline.
Location: Illinois, United States
Date Posted: 7/15/2010 8:58:20 PM
Waymark Code: WM98Y1
Published By: Groundspeak Premium Member Ernmark
Views: 1

Long Description:
Although the disk is stamped 150 M, it is located southerly along the old railroad bed 220 meters from Disk 0 M.
From the NGS Web Site:
THE 150-METER POINT IS A STANDARD NGS CALIBRATION BASE LINE DISK STAMPED "150 M 1988" SET IN THE TOP OF A 40 CM (16 IN) DIAMETER CONCRETE POST FLUSH WITH THE GROUND. IT IS 4.0 M (13.1 FT) WEST OF THE CENTERLINE OF OLD HIGHWAY 51, AND 1.0 M (3.3 FT) EAST OF A WITNESS POST.
Condition: Mark found in good condition

Designation: 150 M

Benchmark Agency: National Geodetic Survey

Monumentation type: other (not any of the below)

Monumentation type (if other): Calibration Baseline

County: Jackson

USGS 7.5' Topographic Quadrangle Name (optional): De Soto

Find type: Found by luck/skill/knowledge

Web address of this benchmark's datasheet (optional): [Web Link]

Benchmark Agency (if other): Not listed

Special category (optional): Not listed

Special Category (if other): Not listed

NGS PID: Not listed

Local database's URL (optional): Not listed

Visit Instructions:
  1. A closeup photo of the mark taken by you is required.
  2. 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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