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Durable, easy-to-use Gaussmeter for spot-checking applications

The GM07AP  is our entry level Gaussmeter. With a Transverse & Axial Hall Probe as standard, the GM07AP is suited to a wide range of applications where there is no requirement to export data from the Gaussmeter. 

  • DC accuracy of better than ±0.5% standard probe and Gaussmeter
  • Standard sensitivity Transverse Hall probe included
  • Range of Axial, Transverse, High Sensitivity and Fluxgate probes available to allow and extremely wide range of measurement 
  • Visible sensor point on probe
  • Intuitive menu set-up with non-volatile memory
  • Store measurements, up to 100 at a time
  • Dot matrix display with menu driven functions
  • Powered by 4x AA cells
  • UK Delivery: 5 to 7 working days from purchase
  • EU and Rest of World Delivery: 7 to 10 working days from purchase
With a Hirst Gaussmeter, you can rely on a product that has been developed with durability, precision and usefulness as core qualities. The GM07AP is robust enough for rugged shop floors and accurate enough for laboratory use. With a one year guarantee and calibration certificate included, the GM07AP Gaussmeter is ready to use and simple to operate.

Some example applications include:

  • Computer disk Drive Actuators
  • Loudspeaker Air Gaps
  • Electric Motor air gaps
  • Magnetic ‘strength’ testing for food industry separators
  • Spot checking magnetic field strength for Non-destructive testing (magnetic particle inspection)
  • Verifying compliance with IATA, IACO and FAA regulations on magnetism from packages to be shipped by air with AFG100 Fluxgate probe
  • Non destructive Testing (Magnetic) with Robust option TP002R
  • Goods inward and Quality Assurance Inspection
  • Magnet calibration
  • Transformer Stray Field measurements
The GM07AP is ideal for a wide range of applications. If you do not see your desired application on the list, or to ensure the GM07AP is right for you, please do not hesitate to contact us

The GM07AP is a basic version of the GM08 Gaussmeter. Without external connectivity or the ability to connect to PC, the GM07AP is a hand-held Gaussmeter with a wide range of functions and applications at great value. 

The GM07AP comes with the TP002 Transverse Hall Probe & AP002 Axial Probe, however, you may need an additional probe to suit your application. See our range of transverse and axial probes here.

Full Measurement Ranges

Normal Sensitivity Probe



High Sensitivity Probe



Fluxgate Probe


Range 1

3.000 T30.00 kG2388 kA/m30.00 kOe
Range 2

300.0 mT3.000 kG238.8 kA/m3.000 kOe
Range 3Range 1
30.00 mT300.0 G23.88 kA/m300.0 Oe
Range 4Range 2
3.000 mT30.00 G2.388 kA/m30.00 Oe

Range 3
300.0 µT3.000 G238.8 A/m3.000 Oe

Range 199.99 µT999.9 mG79.60 A/m999.9 mOe

Range 29.999 µT99.99 mG7.960 A/m99.99 mOe

Range 3999.9 nT9.999 mG796.0 mA/m9.999 mOe

Range 499.99 nT999.9 µG79.60 mA/m999.9 µOe


With Hirst products, you can expect excellent reliability and accuracy. During manufacture, the accuracy of nuclear magnetic resonance is used to determine the irregularities and non conformities of the GM07 and GM08 with the Hall Probe. This is stored and used mathematically to automatically correct readings taken by the GM07 and GM08. This enables very linear and accurate measurements to be obtained. Every GM07 and GM08 comes with a certificate of calibration valid for one year.

Margin for change over repeated measurements
Calibrate to standards traceable to the National Physical Laboratory 
Margin of difference from true reading, probe AND Gaussmeter

Express Service 

* Please note that our express service does not include the standard shipping prices which will be invoiced separately. This service is to cover the cost of expediting the manufacturing process and dispatching to you within 48 hours. This service is subject to stock and availability at the time of purchase. Please contact us before using this service to ensure availability.

  • Meter
  • Standard Transverse Hall Probe
  • Probe protection
  • Standard Axial Probe
  • Zero Flux Can
  • Calibration Certificate
  • Case

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GM07AP Gaussmeter with Transverse and Axial probe

  • £628.00 + VAT* + Shipping

    * Where applicable

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