• High performance sub-surface broadband seismometer with maximum versatility and operational at any angle.
  • The Radian Posthole is operational at any angle, meaning it can be deployed in uncased holes up to 100 m deep.
  • The Radian Bore-hole is designed for installations in cased bore-holes of between 60 mm and 100 mm diameter, up to depths of 2000 m.

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