• CG204
  • Usually ships in 3-5 business days



  • Automatic substrate recognition
  • Magnetic induction for ferrous substrates
  • Eddy current measurement for non-ferrous substrates
  • Easy-to use menu system
  • Two measuring modes: Single and Continuous
  • Two working modes: Direct and Group
  • Memory stores 400 readings: 80 Direct and 320 Group
  • User-programmable high/low alarms
  • Min/Max/Average, one or two point calibration

What's in the Box

  • Two AAA batteries
  • USB cable
  • Software
  • Calibration iron
  • Calibration aluminum
  • Precision standards
  • Pouch case


The Extech CG204 coating thickness tester features dual technology that provides automatic recognition for ferrous and non-ferrous substrates. This tester uses magnetic induction for ferrous substrates and eddy current measurement for non-ferrous substrates. With an easy-to-use menu system, the CG204 offers two measuring modes, single and continuous, as well as two working modes, direct and group.

With the ability to store up to 400 readings (80 direct and 320 group), the Extech CG204 coating thickness tester also features use-programmable high/low alarms, min/max/average and one or two point calibration. A USB interface, as well as included software, makes downloading and analyzing data from the CG240 simple.