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The baseline measurement was the first project of its kind undertaken in
America, and essential for Massachusetts' pioneering Trigonometrical Survey, performed under chief engineer Robert Treat Paine. Its careful measurement was critical since the accuracy of the whole triangulation network depended
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Borden was a highly competent engineer whose ability was widely recognized. Indeed, the entire project became generally known as the Borden Survey. He measured the baseline with a nominal accuracy of better than one part in 5 million. As
Professor A. D. Butterfield has written, "The work performed
78:, which employed a bi-metallic measuring instrument to provide constant readings despite temperature variations. His apparatus was 50 feet (15 m) long, enclosed in a tube, and employed with four compound microscopes.
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It appears that the north end of the baseline lies just south of the intersection of today's Route 116 and Route 5 in
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The baseline was measured with greater accuracy than previously possible by using a new measuring device invented by
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and results obtained far surpassed in magnitude and attainment of any previous work of this kind in
America."
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Butterfield, A. D., "History and
Development of Triangulation in Massachusetts", in
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American
Society of Civil Engineers -Borden baseline 1831 landmark
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130:, Volume I, Nos. 3 and 4, pp. 285–299 and 335–355, 1898.
128:The Journal of the Worcester Polytechnic Institute
59:. It was completed in 1831. It was designated a
158:National Oceanic and Atmospheric Administration
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61:National Historic Civil Engineering Landmark
16:Historic survey line in Massachusetts
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209:Historic Civil Engineering Landmarks
139:American Society of Civil Engineers
65:American Society of Civil Engineers
34:American Society of Civil Engineers
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36:plaque at the Tilton Library in
204:Geography of the United States
170:"Notes on the Borden Baseline"
87:South Deerfield, Massachusetts
57:South Deerfield, Massachusetts
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219:Deerfield, Massachusetts
214:Hatfield, Massachusetts
91:Hatfield, Massachusetts
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164:on December 12, 2006.
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176:. December 31, 2006
135:"Borden Base Line"
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174:Valley Historians
154:"The Bache Years"
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178:. Retrieved
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180:January 30,
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193:Categories
121:References
199:Surveying
103:Surveying
67:in 1981.
97:See also
53:Hatfield
71:on it.
63:by the
182:2022
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