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Apparatuses and methods for making geophysical measurements useful in determining the deflection of the vertical

  • US 5,112,126 A
  • Filed: 07/27/1990
  • Issued: 05/12/1992
  • Est. Priority Date: 07/27/1990
  • Status: Expired due to Fees
First Claim
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1. A non-magnetic apparatus comprising:

  • (a) means for finding an instrument spatial angle between a reference direction and an instrument characterization direction, wherein the means for finding said instrument spatial angle comprises a gyroscope, and(b) means for finding a deflection spatial angle between said instrument characterization direction and a direction along a plumb line, wherein the means for finding a deflection spatial angle is attached to the means for finding an instrument spatial angle.

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