The magROCK, for measuring magnetic susceptibility in rocks, cores and samples, incorporates the latest in measurement and display technology while retaining the sound physical principles that enable improved sensitivity and accuracy.

Deep penetration

Low frequency, 750 Hz, for deep penetration of rock sample.

Works both ways

A display that reverses when held upside-down for ease-of-reading.

Great display

Digital, graphical display with a user friendly menu system.


  • Low frequency, 750 Hz, for deep penetration of rock sample and is optimal for avoiding erroneous readings caused by the simultaneous measurement of conductivity and susceptibility.
  • A unique display feature of the magROCK is the reversal of the display for ‘ease-of-reading’ when the unit is held upside down.
  • The magROCK uses two ferrite cored coils that give higher sensitivity and accuracy. This is not possible in smaller instruments.
  • Digital and graphical display
  • Sensitivity of the magROCK is 1 x 10-5 SI Units
  • Ruggedised assembly with ergonomic designed case
  • Large memory stores 30 sets of 128 readings – total of 3,840 individual readings!
  • The magROCK can operate in static or scanning mode
  • Data transfer by USB output (waterproof connector)
  • User friendly menu system

More Features

  • Reads in both SI and CGS units
  • Four button control, easy to use in one hand
  • Scanning mode with audio to identify peak value
  • Rugged and waterproof (EP 65 case)
  • Low noise with very stable readings
  • Fast zeroing (approx. 9 seconds)
  • Long battery life


The unit comes complete with a padded carrying case and data cable to communicate with a computer. Software for downloading data to a PC is included and it runs on Windows XP, Vista or Windows 7.






Physical Specifications

Range 1×10-5 to 10 SI units
Display Size 5.8 x 3 cm.
Power Source 3 x AA Batteries
Battery Life 40 hours (using Alkaline Batteries)
Operating Temp. Range 0 to +50 deg C.
Storage Temp. Range -40 to +60 deg C.
Dimensions 16 x 8 x 4 cm
Weight 365 gm with batteries
Sensor Frequency 750Hz
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