Difference between revisions of "Height of the instrument (HI)"

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

Revision as of 03:11, 27 February 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/