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Details for Benchmark: KZ2259

N 40° 00.003 W 083° 00.894 (NAD 83)

Altitude: 759

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

Location:
In FRANKLIN county, OH View Original Datasheet
Designation:
LATITUDE STONE RESET
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:
Mark of questionable or unknown stability.

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Observed during a 4 day cache run through West Virginia and Ohio.

[Photos:]
photoKZ2259

FOUND. Good Condition.

[Photos:]
photoKZ2259_40_latitude

My son SpiderMonkey26 and I made the drive from Dayton today to catch the OSU basketball game against Minnesota. We arrived a few hours early and I spent some time showing him around campus, visiting some of my old haunts from when my dad worked in Mendenhall Lab.

[Photos:]
photoSpiderMonkey26 at the 40th Parallel

I was in Columbus for a job interview on Friday and had the cabbie swing through campus so I could grab a photo on the way to the airport. The library construction is complete and the area around the marker is now open to the public again. I wasn't able to get a bunch of photos, since I had the cab driver waiting on me rater impatiently.

[Photos:]
photoMarker

I remember my sister making this a stop on my tour of Ohio State in the late '90s when she was an undergrad. Looks just the same today!

Even before getting into geocaching, I had found this and thought it to be very interesting. Made a quick stop back there for an 'official visit' before a game.

N 40° 00.000 W 083° 00.540

My fist benchmark. It is doubly cool because it was first placed by professors Mendenhall and McFarland, and I work in a building in campus that is named for one of those guys.

Found this cache as part of the Ides of March cache run with Team Little Bear to Columbus. We came to Columbus to see the Detroit Red Wings vs Columbus Blue Jacket game at Nationwide Arena on Sunday.. The Wings won and I enjoyed the atmosphere at the gorgeous arena.
We found this one after the game. There is a ten foot tall fence that goes completely the library. It includes the area close to this benchmark. You are still able to see the mark from the fence.

[Photos:]
photoKZ2259
photoKZ2259 setting
photoLibrary construction

This was easy to find. Found this one after I did a local Earthcache.

Found & photoed (at least by long distance). Due to construction and the area being fenced off I could not get directly to the stone. I had to settle for a telephoto shot thru a gap in fencing.

[Photos:]
photolatitude stone from a distance
photokeep out!

found it!

Mark located on station in good condition. I passed this daily when I was in college, so I knew exactly where it was.

[Photos:]
photoStone
photoTop of stone
photoSide plaque

Easy find. I used to point this out when I gave Oval tours at OSU. I wonder what will happen to it when they begin construction on the library.

Right out in the open. Easy find.

-KingFish

Never knew it was there until my girlfriend told me about it. Ha! Had to go see it for myself.

Had seen this before, but actually GPS'd it today while on campus working on our two new caches. Very cool little bit of history that most people never even notice as they walk by.

First benchmark I've found so far. Easy find, not far from a cache iota and I put out.
Here's a picture of iota with the benchmark.

[Photos:]
photoimage

Found this benchmark today while walking across campus -- I knew there was one near the library, but didn't know it was so easy to spot. Found it without even using the GPSr. Took a few pics with tiny digicam, will post them when I get home tonight.

Around 13:15, we visisted the benchmark while we were out geocaching. This is my wife's first benchmark find. It is quite and easy one. I also took a few shots of the benchmark and monument as promised. (See the Found it! log below.)

There are a couple of shots of the sundial mentioned in the engineer's notes. It is an unusual sundial. Unfortunately, it is damaged. The gnomon (the post that casts the shadow) is missing.

[Photos:]
photoOhio State Sundial
This sundial was donated to the university by the Class of 1905. It is located near University Hall, the university's first buiding that was built in 1873.
photoSundial Close-up from Above
This is shot from above. Notice the threads of the bolt where the gnomon should be located. It says "Central Standard Time" on it. However, we are located in the EST time zone. Not sure about this history behind this.
photoSundial Close-up from Side
This is from the side. The horizontal lines correspond to the equinoxes and other significant astronomical dates.
photoSundial Coords
This is a close-up of the coordinates. Although its not entirely clear, it says 40° 0 N, 83° 0 W.

I visited this benchmark at 19:40 today. It is a very easy find as it located in the open. You should be able to find it simply by following the engineer's notes.

My GPSr was giving me the following:
Lat 40 00.007 [40 00' 00.4]
Lon 83 00.895 [80 00' 53.7]

The benchmark lists the following:
Lat 40 00' 00
Lon 83 00' 54
Ele 759.716

NOTE: EMike was kind enough to point out that Lon 83 00.895 is Lon 83 00' 53.7. So, I was closer than I thought. My GPSr must have been having a good day. :) Thanks, EMike!!!

There is a plague on the side of the marker that tells its history. According to the plaque, the benchmark was first set in 1881 by the two members of the first faculty, T.C. Mendehall, Professor of Physics, and R.W. McFarland, Professor of Mathematics and Astronomy. It was originally placed 70 feet west and several feet south of its current location. In 1932, it was relocated by E. F. Coddington, Professor of Geodetic Engineering.

I didn't get a good shot of it because it was getting dark. At my earliest convience, I will return to take a picture during the day. I also have a map to upload. If you visit this benchmark, be sure to catch the geocache (GCF3F1) just south of here.

05.03.2003: Despite the overcast day, I did manage to get a few decent shots. Enjoy!

Details for GCF3F1
http://www.geocaching.com/seek/cache_details.aspx?ID=62449

[last edit: 5/9/2003 3:59:34 PM PST]

[Photos:]
photoThe Benchmark
photoThe Limestone Monument
photoThe top half of the plaque...
photoThe bottom half of the plaque...
photoMap of the surrounding area.
X marks the spot! :)

Documented History (by the NGS)

Unknown by (MONUMENTED)
03/11/1987 by (GOOD)
DESCRIBED 1987 RECOVERED IN GOOD CONDITION.
06/08/1990 by OH-049 (GOOD)
RECOVERY NOTE BY FRANKLIN COUNTY OHIO 1990 THE STATION IS LOCATED ABOUT 4.5 KM (2.80 MI) NORTHWEST OF DOWNTOWN COLUMBUS (BROAD AND HIGH STREETS), 10.0 KM (6.21 MI) SOUTH OF WORTHINGTON, AND ON THE CAMPUS OF THE OHIO STATE UNIVERSITY JUST NORTH OF THE LIBRARY. THE STATION IS A DRILL HOLE IN A BRASS PLATE CEMENTED ON TOP OF A 1 FOOT SQUARE CUT LIMESTONE BLOCK PROJECTING 1.5 FT (0.46 M) ABOVE THE GROUND. IT IS 193 FT (58.83 M) NORTH OF THE NORTH SIDE OF THE MAIN LIBRARY, 190.5 FT (58.06 M) EAST OF THE NORTHEAST CORNER OF TOWNSEND HALL, 117 FT (35.66 M) SOUTHWEST OF THE SOUTHWEST CORNER OF UNIVERSITY HALL, AND 82.5 FT (25.15 M) NORTH OF THE SUNDIAL.

Control Text

  • The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in April 1998.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
  • 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.

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