Height of the instrument (HI): Difference between revisions

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[[Category:Glossary]]  [[Category:Turf]]
[[Category:Glossary]]  [[Category:Turf]]


1. In surveying, the sum of the [[benchmark]] elevation and a rod reading at the benchmark, from which all subsequent readings are subtracted to establish elevations. The benchmark elevation may be established from older surveys, or may be arbitrarily assigned to provide a consistent basis for comparison.<br>
1. In surveying, the sum of the [[benchmark]] elevation and a rod reading at the benchmark, from which all subsequent readings are subtracted to establish elevations. The benchmark elevation may be established from older surveys, or may be arbitrarily assigned to provide a consistent basis for comparison.<br><br>
 
http://www.ci.salem.va.us/depts/engineering/images/tools3.jpg<br><br>
http://www.ci.salem.va.us/depts/engineering/images/tools3.jpg
Here is a surveyor's tool and the height to of the instrument will be taken where the lens is found.<br>
 
Source: http://www.ci.salem.va.us/depts/engineering/
Here is a surveyor's tool and the height to of the instrument will be taken where the lens is found
 
'''Source:'''http://www.ci.salem.va.us/depts/engineering/

Revision as of 14:19, 16 March 2006


1. In surveying, the sum of the benchmark elevation and a rod reading at the benchmark, from which all subsequent readings are subtracted to establish elevations. The benchmark elevation may be established from older surveys, or may be arbitrarily assigned to provide a consistent basis for comparison.

tools3.jpg

Here is a surveyor's tool and the height to of the instrument will be taken where the lens is found.
Source: http://www.ci.salem.va.us/depts/engineering/