Magnetic Field Measurement Equipment Calibration

Your ability to deliver accurate and reliable measurements depends on the stability of your equipment, and your equipment depends on the accuracy and quality of its calibration. With over 25 years of calibration experience, GMW has become a recognized leader in magnetic field calibration. GMW calibrates or brokers calibrations for the following manufactures: Metrolab, Bartington, Group 3 and Senis. GMW has extensive experience calibrating Metrolab products and can offer up to 10 business day delivery after receipt for the Metrolab 2025 and 3045. GMW also has the capability to do in-house repairs if required. Beyond calibrations and repairs GMW offers in-house and on-site normalization services for the Metrolab 3048 probe array.

GMW also offers the below magnetic field services:

  • Magnetic Object Mapping (Senis Mapper)
  • Magnetic Field Exposure Testing, dc to 50mT

Request a Quote for Calibration and Returned Material Authorization number (RMA).

GMW is ISO 9001:2015 Certified

Part No. Description Price

Mag-01 and Mag01H Fluxgate Magnetometer
MAG-01-CAL Mag-01H and one Probe Calibration at National Physical Lab-UK
MAG-01-Probe-CAL Mag-01 Probes B - G Calibration and Certificate $650

Mag-03 and Spectramag-6 Fluxgate Sensor
MAG-03-SE-CAL Mag-03 Sensor Calibration Check and Certificate $650
MAG-03DAM-CAL Mag-03DAM Calibration Check and Certificate $840
MAG-03SCU-CAL Mag-03SCU Calibration Check and Certificate $1030
MAG-03PSU-CT Mag-03PSU Compliance Test $490
MAG-03PSU-CAL Mag-03PSU Calibration Check and Certificate $490
SPECT-6AC-CAL Spect-6 accelerometer Calibration Check $810
SPECT-6AS-CAL Spect-6 acoustic sensor Calibration Check $840
SPECT-6-CAL Spect-6 Calibration Check and Certificate $1040

THM1176, TFM1186, THM7025 and ETM-1 USB/Hand Held Teslameter (Gaussmeter)
THM7025-CAL Calibration of THM7025 or ETM-1. $630
TFM1186-CAL Calibration of TFM1186 $1500
THM1176-LF-CAL Calibration of THM1176-LF. $660
THM1176-MF-IN-CAL Calibration of THM1176-MF within calibration period.1 $660
THM1176-MF-OUT-CAL Calibration of THM1176-MF outside calibration period.1 $1320
THM1176-HF-CAL Calibration of THM1176-HF to ±14T in 20T Range.2 Upon Request
1 Must be receivedby GMW San Carlos before February 15, May 15, August 15 or November 15 to qualify for discounted batch calibration pricing. Contact GMW for specifics on delivery times.

2 HF probes with S/N 0000654 or lower have the option of ±3T or ±14T calibration. Contact for details.

PT 2020 and PT 2025 Digital NMR Teslameter (Gaussmeter)
2020-CAL Recalibration of PT 2020 Teslameter $700
2025-CAL Recalibration of PT 2025 Teslameter $700
2025-REP Minor repair of PT 2020 or PT 2025 Teslameter, flat rate $600
PRB-REP-ML Minor repair of NMR probe, flat rate $500

MFC 3045 and MFC 3048 Magnetic Field Camera
3045-CAL MFC 3045 Calibration $870
MFC-CAL-1.5T MFC 3048 Probe Array Normalization, field 1.5T $4120
MFC-CAL-3.0T MFC 3048 Probe Array Normalization, field 3.0T $4120
MFC-CAL-Other MFC 3048 Probe Array Normalization, field other than 1.5T or 3.0T $5770

PDI 5025 Digital Integrator
5025-CAL PDI 5025 Calibration $1600

DTM, MPT Digital Teslameter (Gaussmeter)
DTM-MPT-SYS-CAL Calibrate DTM-150/151/132 with MPT-141/231/132/230 Probe Head System
DTM-CAL Calibrate DTM-150/151/132 Teslameter Only $840
MPT-CAL Calibrate MPT-141/231/132/230 Probe Head Only $1090

Three-Axis Hall Probes and Transducers
MFT-3A-CAL 3-Axis, Sensitivity & Linearity Calibration $1,040.00

RMA Authorization

To request a Returned Material Authorization number (RMA), please email
Please include full details.

Terms and Conditions

Terms and Conditions:

Prices above are for domestic deliveries to Canada, USA and Mexico only.
Prices are expressed in U.S. Dollars, FCA San Carlos, California.
Prices are subject to change without notice.
OEM discounts are available.


Visa, MasterCard, Amex, Prepayment before shipment, or Net 30 days (subject to credit acceptance).


30 to 120 business days after receipt.

GMW is ISO 9001:2015 Certified