Holton Base Line (1891)

The Holton Base Line in Ripley County, Indiana was measured from June through October, 1891. The line was measured with three techniques, two of which were experimental: bar-in-ice and 100-meter metallic tapes. Assistant A. T. Mosman was in charge of the measurements, with Assistant R. S. Woodward responsible for the bar-in-ice experiment and Assistants Woodward and O. H. Tittmann performing the metallic tape measurements.

The measurement for the triangulation base was performed twice with contact bar apparatus, and the measurement was accomplished from July 28 to August 13, 1891. The length of the base line, reduced to sea level, was 5,500.576 meters, +/- 4 mm.

The triangulation network which connected the base line to the larger network was observed in 1889 through 1890. The observers were A. T. Mosman, W. B Fairfield, and J. B. Boutelle. The stations of the network were located and set in 1887 by F. W. Perkins.

See also: transcontinental triangulation, Ohio Series, Indiana series

http://celebrating200years.noaa.gov/distance_tools/theb1139.html Iced bar apparatus. (NOAA 200th Anniversary site)


Indiana series http:/images/bmwiki/arc/holton.jpg Ohio Series

No.

Station

PID

Monumented

Destroyed

Designation

Holton South Base (1890)

JZ3337

1890

HOLTON SOUTH BASE 1890

Holton North Base (1890)

JZ1863

1890

HOLTON NORTH BASE

Correct (1887)

JZ3335

1890

CORRECT 1890

Glasgow (1887)

JZ3336

1890

GLASGOW

Green (1887)

JZ3355

1890

GREEN

Reizin (1887)

JZ3330

1889

REIZIN RESET

Culbertson (1887)

HZ1994

1890

CULBERTSON RESET

Mud Lick (1887)

HZ2060

1947

MUD LICK RESET

Stout (1887)

HZ2307

1914

STOUT RESET