Skip to Content

Details for Benchmark: JZ0046

N 39° 54.063 W 084° 11.758 (NAD 83)

Altitude: 984.81

Coordinates may not be exact. Altitude is ADJUSTED and location is ADJUSTED. (more info)

Location:
In MONTGOMERY county, OH View Original Datasheet
Designation:
VANDALIA AZ MK
Marker Type:
azimuth mark disk
Setting:
set into the top of a round concrete monument
Stability:
May hold, but of type commonly subject to surface motion.

Must Read!

Benchmarks may be on private property or in dangerous locations. Obey local laws. By using the services on Geocaching.com you agree to this disclaimer.

The road has been renamed Northwoods Blvd. Other than that found as noted.

With Delco being gone some of the reference points are gone. Marker in good condition.

[Photos:]
photomarker

Have been seeing this benchmark for some time and finally decided to 'find' it.

#244 Benchmark recovered as described.

[Photos:]
photoJZ0046 (NGS Benchmark)
photoJZ0046 (looking east)
photoJZ0046 (looking west)

This trip devoted entirely to benchmarks.

Well monumented and in great condition. Someone has even painted the edges of the cement monument with Hi-Vis paint.

[Photos:]
photoProof

Documented History (by the NGS)

01/01/1938 by CGS (MONUMENTED)
01/01/1947 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1947 0.8 MI NE FROM VANDALIA. 0.65 MILE NORTH ALONG U.S. HIGHWAY 25 FROM ITS JUNCTION WITH U.S. HIGHWAY 40 AT VANDALIA, THENCE ABOUT 0.15 MILE EAST ALONG ENGLE ROAD, AT THE NORTH EDGE OF THE AERO PRODUCTS MANUFACTURING COMPANY GROUNDS, 200 FEET EAST OF THE CENTER LINE OF THE NORTH ENTRANCE TO THE AERO PRODUCTS PLANT, 18 FEET SOUTH OF THE CENTER LINE OF ENGLE ROAD, 44 FEET EAST OF POWER POLE NO. 135402, 14 FEET WEST OF A CHERRY TREE, 4.2 FEET NORTH OF A WIRE FENCE, 2 FEET NORTH OF A WHITE WOODEN WITNESS POST, ABOUT LEVEL WITH THE ROAD AND SET IN THE TOP OF A CONCRETE POST PROJECTING 10 INCHES.
01/01/1969 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1969 RECOVERED IN GOOD CONDITION.
06/21/1993 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1993 4.0 KM (2.50 MI) NORTHERLY ALONG INTERSTATE HIGHWAY 75 FROM THE JUNCTION OF INTERSTATE HIGHWAY 70 IN VANDALIA (EXIT 61), THENCE 0.7 KM (0.45 MI) WESTERLY ALONG NORTHWOODS BOULEVARD (EXIT 64), 60.2 M (197.5 FT) WEST OF THE CENTER OF THE NORTH ENTRANCE ROAD LEADING TO THE DELCO CHASSIS COMPANY, 13.2 M (43.3 FT) WEST OF THE NORTHWEST CORNER OF AN ELECTRIC CABLE BRIDGE STRUCTURE, 8.6 M (28.2 FT) SOUTH OF THE CENTERLINE OF THE EASTBOUND LANES OF THE BOULEVARD, 1.3 M (4.3 FT) NORTH OF A FENCE, 0.3 M (1.0 FT) ABOVE THE LEVEL OF THE BOULEVARD, AND THE MONUMENT PROJECTS 0.2 M (0.7 FT) ABOVE THE GROUND SURFACE.
08/05/1994 by NOS (GOOD)
RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1994 (JDR) RECOVERED AS DESCRIBED. NOTE--MONUMENT IS SQUARE.
02/22/1995 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1995 (GAS) 4.0 KM (2.50 MI) NORTHERLY ALONG INTERSTATE HIGHWAY 75 FROM THE JUNCTION OF INTERSTATE HIGHWAY 70 IN VANDALIA (EXIT 61) , THENCE 0.7 KM (0.45 MI) WESTERLY ALONG NORTHWOODS BOULEVARD (EXIT 64) , 60.2 M (197.5 FT) WEST OF THE CENTER OF THE POST 3 WEST LOT ENTRANCE GATE LEADING TO THE DELCO CHASIS COMPANY, 13.2 M (43.3 FT) WEST OF THE NORTHWEST CORNER OF A STRUCTURE SUPPORTING AN ELECTRIC CABLE, 8.6 M (28.2 FT) SOUTH OF THE CENTERLINE OF THE EASTBOUND LANES OF THE BOULEVARD, 1.3 M (4.3 FT) NORTH OF A FENCE, 0.3 M (1.0 FT) ABOVE THE LEVEL OF THE BOULEVARD, AND THE MONUMENT PROJECTS 0.2 M (0.7 FT) ABOVE THE GROUND SURFACE.

Control Text

  • The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in May 1995.
  • The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991.
  • The X, Y, and Z were computed from the position and the ellipsoidal ht.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The ellipsoidal height was determined by GPS observations and is referenced to NAD 83.
  • 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.

Advertising with Us

Return to the Top of the Page