DeviGyro Overshot Xpress (OX)

The DeviGyro Overshot Xpress (OX) is the ultimate survey instrument for diamond drilling

Enabling high-speed (up to 100m/min) surveys whilst pulling core tube, the OX maximises bit on bottom time whilst delivering on accuracy. Survey in NQ-PQ drill holes with the original OX, or BQ-NQ with the new OX Mini.


  • Continuous surveying: 10 samples per second

A typical 350m survey (In and OUT) takes 15-17 minutes, recording data every 100mm and reporting in 3m survey intervals.


  • Interchangeable centralisers.

Standard OX: NQ-PQOX Mini: BQ-NQ


  • Battery: 25 hours continuous use. No charging required
  • Android operating software features built-in quality assurance processor

New! Save even more time and maintenance with Automatic Depth Estimation (ADE), continuous DeviGyro surveying without a DeviCounter (wireline counter). Learn more here

Technical Specifications

  • Survey speed: Up to 100m/min (recommended 60-80m/min)
  • Inclination accuracy: ±0.1°
  • Direction accuracy: ±0.5°
  • Tool face accuracy: ±0.2°
  • On board memory: 6hrs 40min of surveying
  • Temperature: -15° to +75°

The complete system - diamond drilling

The complete directional survey system combines the DeviGyro Overshot Xpress, DeviAligner and DeviCloud to deliver absolute precision from start to finish.


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Frequently Asked Questions
Product Brochure

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Downhole Surveys are the exclusive Australian distributors for Devico products.

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DHS clients on the OX

Ready to achieve absolute precision on your next drill campaign?