Category Archive
for: ‘ground geophysics’

GEM Systems Magnetometer spare parts

We have a lot of magnetometer spare parts for sale. Modern Mag has developed our own backpack to hold magnetometers from GEM Systems, Geometrics and Scintrex. As a consequence, we have a LOT of used spare parts for GEM Systems backpacks and magnetometers. Some of the spares we have for sale are: GSM-19 and GSMP35 […]

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A compact, lightweight and reliable magnetometer backpack

Ground based magnetometer systems haven’t changed much in 12 years. The most recent change was in 2001 with the inclusion of a GPS in most magnetometers when selective availability was turned off. This greatly increased the efficiency of surveys since only one operator was required to conduct a survey and they could walk continuously without […]

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Caesium Magnetometers. When Sales and Science Collide.

Modern Mag has created a backpack that can replace the standard backpack that ships with a prominent American Caesium magnetometer. To design this backpack I had to study and understand the Caesium magnetometer specifications. I have used this magnetometer many times in the past (my university owned one), but still wanted to check the latest […]

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Don’t do a ground magnetic survey without GPS navigation built into the magnetometer.

Most magnetometers can tell you where they have been, but only a few can tell you where to go. For efficiency, ground magnetic surveys are usually conducted along parallel survey lines – or grids. In the bad old days prior to GPS, these grids would have to be laid out at great expense prior to […]

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How to walk straighter and further with less effort when conducting ground geophysical surveys.

Some walk the line straighter than others. Walking straighter lines when conducting ground geophysical surveys increases the production l-km in a day. Alternatively, if there is a fixed amount of work to do in the day, then straighter lines means less walking and less stress on the body. Walking straight in thick vegetation is never […]

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Modern Mag is an official GEM Systems agent.

Did you know Modern Mag sells GEM systems magnetometers and spares? We have been using GEM equipment for over 17 years. We have experience with all of their magnetometers and can help you choose a system for your needs. We chose GEM magnetometers for our field work because they are simply the best magnetometers to […]

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