• Z-160-0003
  • Usually ships in 1-2 weeks



  • 0.025in to 100ft range for pit and flaw detection
  • 0.1 to 6.0in range for through paint and coatings
  • 0.0122 to 0.7300in/µs velocity range
  • 0.001in resolution
  • Audible and visual alarm
  • USB-C 1.1 PC & OSX output
  • Rugged sealed aluminum case
  • 2-year limited warranty
  • Factory calibration NIST & MIL-STD-45662A

What's in the Box

  • Thickness transducer (P/N T-102-2700)
  • Couplant
  • AA batteries
  • Manual
  • Carrying case
  • Certificate of calibration


The Dakota Ultrasonics MMX-7 v2.0 thickness gauge has all the features of the ZX gauges with some additional advantages. The MMX-7 features Pulse-Echo mode for pit and flaw detection and Echo-Echo mode for through paint and coatings, and users can conveniently toggle between the two modes.

The MMX-7 uses a highly damped, dual-element-style transducer for both modes, eliminating the need to switch between transducer types. The gauge is equipped with a transducer list for improved linearity, multiple calibration and selectable material type options. Transducers with an HD (high damped) designation are commonly used for E-E (echo-echo) through paint modes, CPZT (composite) are used for additional output with materials that are difficult to pass sound through, and standard diameter/frequency transducers are used for P-E (pulse-echo) mode.

The gauge offers selectable display options including large digits and B-Scan, a feature that displays a cross section of the test material and provides the user with a graphical view of the opposite or blind surface. The MMX-7 also features Windows PC and OSX interface software, and USB-C 1.1 connectivity. The gauge can store up to 64 custom, user-definable setups that can be transferred to and from a PC or Mac. The MMX-7 is packaged in an all-aluminum sealed case, making it rugged and resistant to the working environment.

Dakota MMX-7 Thickness Gauge Applications

  • Corrosion and pitting
  • Tube and pipe
  • Tanks
  • Boilers
  • Glass


Required Transducers

At least one transducer is required for this product


Please consider these optional accessories.