Vernier Software and Technology
Vernier Software & Technology

Go Direct 3-Axis Magnetic Field Sensor

Go Direct™ 3-Axis Magnetic Field Sensor product image

The Go Direct 3-Axis Magnetic Field Sensor allows you to determine the magnitude and direction of the magnetic field at any point in space. It directly connects wirelessly via Bluetooth® or wired via USB to your platform.


The Go Direct 3-Axis Magnetic Field Sensor measures the components of the magnetic field along three orthogonal axes. This allows you to determine the magnitude and direction of the magnetic field at any point in space. If desired, measure the field along only two axes, or even one axis, choosing the direction that is best for the experiment.

The Go Direct 3-Axis Magnetic Field Sensor can be used in a variety of experiments:

  • Quantify the magnetic field strength of induced magnets.
  • Determine the declination and inclination of the Earth’s magnetic field at your location using vector components.
  • Investigate the relationship between magnetic field strength, coils per unit length, and current in the center of a solenoid.

Rechargeable Battery—Ready When You Are

The Go Direct robust rechargeable battery offers long battery life and provides always-ready operation. Monitor battery life directly from our free Graphical Analysis 4 app. Should the battery run low, simply connect the sensor to the charging cable and keep on collecting—no interruptions or inconvenience to you or your students.

Wired or Wireless—The Flexibility to Choose

Our Go Direct sensors connect directly to your mobile device, Chromebook, or computer using our free Graphical Analysis 4 app—no additional equipment or software purchases are necessary. Go Direct sensors can be used wired via USB or wirelessly via Bluetooth, allowing you to choose the solution best for your classroom or laboratory.


  • Measurement range: ±5 mT
  • Operating temperature: –40°C to 85°C
  • Dimensions: 19 cm long, wand portion 12.2 cm long. Wand tapers from 0.8 cm square at handle to 0.7 cm square at tip. Designed to be placed inside a solenoid if needed.
  • Calibration: Factory-calibrated, user does not need to calibrate.
  • Connections:
    • Wireless: Bluetooth
    • Wired: USB

View the Go Direct 3-Axis Magnetic Field Sensor user manual

Experiments and Lab Ideas

Select a lab book to see a list of experiments and more information.

Compatibility Requirements

  • LabQuest 2
    LabQuest 2

    Coming Soon

    A future update will support data collection with the Go Direct 3-Axis Magnetic Field Sensor and LabQuest 2, a standalone data logger.

    Learn more about LabQuest 2 »

  • Computers

    InterfaceGraphical Analysis for ComputersVersion 4.0
    No interface requiredFull support 1

    Compatibility Notes

    1. For Bluetooth® connectivity, only computers running Windows 10 or Mac OS X 10.10 or newer are supported. The computer must also have a compatible Bluetooth 4.0+ radio.
  • Chromebook

    InterfaceGraphical Analysis for ChromeVersion 4
    No interface requiredFull support
  • Mobile Devices
    Mobile Devices

    InterfaceGraphical Analysis for iOSVersion 4.0.1Graphical Analysis for AndroidVersion 3.1.1
    No interface requiredFull supportFuture support

What’s Included

  • Go Direct 3-Axis Magnetic Field Sensor
  • Micro USB Cable

Ordering Information

All prices are for U.S. educators.

NameOrder CodePriceQuantity
Go Direct 3-Axis Magnetic Field SensorGDX-3MG$59
Optional Accessories
Go Direct Charging StationGDX-CRG$40


Educational use only: Vernier products are designed for educational use. They are not appropriate for industrial, medical, or commercial applications. Product usage disclaimer »

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