Category Archive
for: ‘ground magnetics’

GEM Systems and Geometrics Magnetometer Backpack. $2,950

Modern Mag has developed a carbon fibre and aluminium backpack for use with GEM systems, Scintrex or a Geometrics magnetometer. This pack is lighter and much more comfortable than the backpacks shipped from the manufacturers. For example, students call the Geometrics magnetometer G858/859 the “rack of pain”! Comfortable A prominent Australian hiking brand has designed […]

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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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Used Overhauser magnetometer for sale

  Ideal for UAV or ground magnetic base station. Recently serviced by GEM. We have for sale a used GEM Systems GSM-19 Overhauser gradiometer. It would be ideal for a base station used in tandem with a UAV magnetometer or a roving ground mag system. Can sample at 3s. Much more accurate than a proton […]

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Magnetometer batteries

Scintrex and Geometrics magnetometers require heavy sealed lead acid magnetometer batteries greater than 7.2Ah in size. In contrast GEM Systems uses lightweight lithium Ion batteries and SLA batteries only 2.2Ah in size. While the SLA batteries are conveniently built in to the console, they do however need to be protected against a short circuit against […]

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Overhauser Magnetometer sale

For a limited time you can save thousands off the new price of a GEM Systems GSM-19 overhauser base station or rover magnetometer. Fast sampling rover (GSM-19W overhauser) magnetometers are currently CAD$11,850 and base station GSM-19 overhausers are currently priced at CAD$9,000. Overhauser magnetometers have a sensitivity of 0.02 nT and are ideal for base […]

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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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A ground magnetometer survey gone bad. Very bad.

A news report from Tsodilo Resources (TSX:TSD) on July 22nd 2013 caught my eye: A total of 63.70 line kilometers [of ground magnetics] was covered during the month of June as area totaling 2.53 km2. The expected monthly target is 360 line kilometers for the month and the shortfall is largely attributed to machine malfunction […]

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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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