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AlphaLab DC Gaussmeter Model GM1-HS with Boot / NIST Certificate (0.01-800G)
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AlphaLab DC Gaussmeter Model GM1-HS with Boot / NIST Certificate (0.01-800G)

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Brand: AlphaLab Inc
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DC Gaussmeter Model GM1-HS
Manufactured in the USA by AlphaLab, Inc.
For Residual Magnetism 0.01-800 Gauss

The Gaussmeter Model GM1-HS reads moderate-strength static magnetic fields up to 800 G with a resolution of .01G. It measures magnetization of ferrous metals, solenoids and the far field of strong magnets. This model supersedes the MD1-HS, which had no auto-zero.

Product Description:

The Model GM1-HS measures the strength and polarity of magnetic fields up to 799.99 gauss. The thin sensor is at the end of a 100 cm flexible cable. The sensor tip is also flexible and can be bent for a variety of situations. The sensor can be held against the surface of a steel part to check for residual magnetism, or it can be bent into an “L” shape to measure inside a DC Solenoid. This meter has a resolution of .01 gauss (1/50 of the Earth’s typical field) which is finer resolution than the Model GM1-ST. It is also used to map fields from large magnets (If fields are over 800 gauss, use the Model GM1-ST). The meter has immediate turn-on and updates 4 times a second. There is no setup required, making this the fastest gaussmeter available. This is a 1-axis meter.

Available Options:

  • Detachable Rubber Boot (included)
  • NIST Traceable Certificate (included)
  • Hard Carrying Case (Optional)


  • High dynamic range and sensitivity: reads up to 799.99 gauss with .01 gauss resolution including polarity.
  • Instant on, updates four times a second, with no setup or initial calibration required.
  • Auto-Zero (subtracts the present field from subsequent readings); also a fine offset control.
  • Offset range is the full +/- 799.99 gauss.
  • 1% accuracy at room temperature.
  • Flexible probe and battery are included.
  • Optional hard carry case are available.
  • CE Compliant.


  • Makes detailed measurement of residual magnetism in metal parts.
  • Use to map field near a magnet, such as the 5 gauss line around an MRI machine.
  • Detect ambient field direction and strength, such as Earth Field.


1-axis DC Gaussmeter GM1-HS

  • Range/Resolution: 799.99 G/0.01 G; with polarity indicator
  • Accuracy: +/- 1% of reading (16° to 29°C); +/- 2% (-4° to 65°C)
  • Offset: Auto Zero. Also fine offset (0.01 gauss resolution)
  • Probe (non-detachable): 2.1 (thick) x 4.3 x 24 mm
  • Size: 5.2 x 3.6 x 1.6 inches; 132 x 91 x 41 mm
  • Weight: 8 oz
  • Battery: 9 volt alkaline (~ 20 hour life)/ "Low Battery" indicator

One Year Limited Manufacturer Warranty