The Formation Density probe provides a calibrated, borehole-compensated density measurement using a detachable 137Cs gamma source and dual shielded detectors.

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The Density Gamma probe (sometimes referred to as a Trisonde) offers a convenient, low cost alternative to the standard Formation Density probe whenever borehole diameter is restricted and qualitative density measurements are acceptable.

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The classic water-well combination probe combining shallow, medium and deep penetrating resistivity measurements with Self-Potential (SP).

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The Verticality probe provides accurate, continuous measurements of borehole inclination and direction.

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