Dakota Ultrasonics is a manufacturer of high-quality industrial ultrasonic testing equipment for the petrochemical, aerospace, power generation, automotive, and other related industries. If you have any questions, need technical support or have a request for custom items, the Dakota Ultrasonics team is available and eager to assist.

The MMX-6 is a simple to use hand-held Ultrasonic Thickness Gauge with the ability to measure through paint and coatings and eliminate the thickness of the paint or coating. The MMX-6 uses a dual element style transducer. With the single press of a button, the MMX-6 can be switched between pit or flaw mode ( pulse-echo), and through paint/coatings mode (echo-echo) for maximum inspection efficiency. The MMX-6 comes as a complete kit, ready to use, and is backed by Dakota Ultrasonics 5 year limited warranty.

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Key Features

Case: Extruded aluminum body / nickel plated aluminum end caps
Resistant to impact and environmentally sealed.
Keypad: Sealed membrane that is resistant to both water and petroleum products.
Nine tactile-feedback keys.
Transducer: Dual elements (transmit and receive).
1 to 10 MHz frequency range.
Special high damped transducers available for use with through paint or coating measurement.
Locking quick disconnect Lemo connectors.
4 foot cable.
Optional cable lengths up to 100 feets.
Custom transducers available for special applications
Power Source: Two 1.5V alkaline or 1.2V NiCad AA cells.
Typically operates for 200 hours on alkaline and 130 hours on NiCad.
Display: Multi-function 4.5 digit liquid crystal display with 0.500 inch numerals, backlit for use in poor light conditions.
Bar graph indicates stability or reading.
Measuring range: Pulse Echo Mode - Measures from 0.025 to 19.999 inches (0.63 to 500 millimeters)
Echo Echo Mode – Measures from 0.100 to 1.0 inches (2.54 to 25.4 milimeters)
Resolution: 0.001 inch (0.01 millimeter)
Velocity Range: 0492 to .3937 in/m s. 1250 to 10,000 meters/sec
Warranty: 5 years limited


  • Corrosion & Pitting
  • Boilers
  • Tube & Pipe
  • Glass
  • Tanks
  • Variety of Applications