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Method and apparatus for determining the elevation of an underground structure

  • US 20050060095A1
  • Filed: 09/17/2003
  • Published: 03/17/2005
  • Est. Priority Date: 09/17/2003
  • Status: Active Grant
First Claim
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1. A survey device for determining an elevation of a subterranean architectural feature, the survey device comprising:

  • a first sensor operable to generate a first signal indicative of a line-of-sight distance from the survey device to the subterranean architectural feature, a second sensor operable to generate a second signal indicative of an angular position of the survey device relative to a vertical reference, and a processor electrically coupled to both the first sensor and the second sensor.

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