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Mag-01H DI Declinometer/Inclinometer System

Mag-01H Declination/Inclination System in the Field       Mag-01H Declination/Inclination System       Mag-01H D/I Single Axis magnetometer image provided by Tech21 April 2012

Mag-01H DI Declinometer/Inclinometer

Mag-01H uses a high-precision single axis fluxgate probe mounted on a non-magnetic theodolite and connected to a meter unit. This enables the accurate measurement of the Earth's magnetic field declination and inclination.

The system comprises a single axis fluxgate magnetometer (type Mag-01H), a fluxgate probe (type Mag A), and a WILD T1 steel-free theodolite. A steel-free tripod is available for mobile surveys. The WILD T1 theodolite has a resolution of six arcseconds (this can be estimated to three arcseconds). 

Mag-01H | Applications

The Mag-01H D/I system is mainly used as an absolute instrument for the measurement of the declination and inclination in a magnetic observatory. Other applications include mapping prior to drilling operations, cartography, or as a calibration tool for rangefinders or compass roses.


  • High accuracy due to the use of a 6 arcsecond-precision theodolite, combined with a magnetometer providing 0.1nT resolution
  • Extremely low magnetic signature of the theodolite
  • Long term stability
  • Battery powered
  • May be fitted with an audio output detector, on request.

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