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MMX-7 High Performance Data Logging Wall Thickness Gauge

Made in USA
Click images to enlarge.
The new CHECK-LINE MMX-7 is a full featured ultrasonic thickness gauge offering an oversized display as well as a complete alphanumeric datalogging system with storage capacity of thousands of data values.

The MMX-7 features the highest resolution graphic LCD on the market and is especially engineered for optimal ease of use.


  • The time-based B-Scan feature displays a cross section of the test material. It is commonly used to display the profile of the bottom surface of the test material.
  • Built in hardware AGC gain control for through paint measurements in multi mode operation.
  • The MMX-7 has the ability to store 64 custom user defined setups. All factory setups can be selected, edited and saved to any setup location.
  • CE Certified
  • Use the visual alarm to set hi and lo limits for applications requiring specific tolerances. If the actual thickness value is above or below the limits, a red light is illuminated.
  • The MMX-7 also comes complete with our Windows® PC software for transferring data to and from a PC.
  • The high speed scan feature speeds up the inspection process by making 32 measurements per second. Remove transducer from the test material, and display the minimum measurement scanned.
  • Use the AUTOFIND feature to locate the detection point, while automatically adjusting the display to bring the signal into view.
  • Includes NIST-Traceable Calibration Certificate
  • 2 Year Warranty

Complete Kit

The MMX-7 is supplied as a complete kit with the gauge, T-102-2700 probe, 4 oz. bottle of coupling fluid, 2 AA batteries, NIST-Traceable Calibration Certificate, data transfer software, serial output cable and Operating Instruction Manual - all in a foam-fitted carrying case.

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Software for Thickness Gauges


Range in Steel:Pulse-Echo Mode: Pit and Flaw detection measures from 0.63 to 254 millimeters (0.025 - 9.999inches)

Echo-Echo Mode: Thru Paint & coatings measures from 2.54 to 102 mm (0.100 - 4.000 inches). Range will vary depending on the thick
Resolution:.001 inches (0.01mm)
Velocity Range:.0492 to .3936 in./ms
1250 to 9999 meters/sec
Units:English & Metric
Measurement Modes:- Pulse-Echo (flaws, pits)
- Echo-Echo (thru-paint)
Transducer Types:Dual Element (1 to 10 MHz).
Memory:16 megabit non-volatile ram
Memory capacity:12,000 pages with 1 reading and waveform per page
Power Source:Three 1.5V alkaline or 1.2V NiCad AA cells
Battery Life:Typically operates for 150 hours on alkaline and 100 hours on NiCad
Auto Power off:if idle 5 min
Display:1/8 in. VGA grayscale display 62 x 45.7mm
Keyboard:Membrane switch with twelve tactile keys
Case:Extruded aluminum body with nickel-plated aluminum end caps (gasket sealed).
Operating Temperature:-14° to 140°F (-10° to 60°C)
Weight, net:383 grams
Dimensions:63.5 W x 165 H x 31.5 D mm
Warranty:2 year limited
Certification:CE Approved, Factory calibration traceable to national standards

Buy Now

Item Description Price
Dakota MMX-7 Ultrasonic Thickness Gauge with T-102-2700 PROBE, Z-160-0001
Protective Holder for Long Body UT Gauges, F-149-0001
1/4" diameter, 5.0 MHz Hi-Damped transducer for thru paint measurement, Side In, Potted
1/2" diameter, 1.00 MHz dual element Composite transducer, Side In, Potted
1/2" diameter, 2.25 MHz dual element transducer, Side In, Potted
1/4" diameter, 2.25 MHz, dual element transducer, Side In, Potted
1/2" diameter, 5.0 MHz dual element transducer, Side In, Potted
3/16" diameter, 5.0 MHz dual element transducer, Side In, Potted
1/4" diameter, 7.5 MHz, dual element transducer, Side in, Potted
1/2" diameter 5.0 MHz dual element transducer Hi-Temp (650 F/344 C), Side in, Microdot
RS232 to USB Adapter
1/4" diameter, 5.0 MHz dual element transducer Hi-Temp (900 F/500 C) Top in, Microdot
In stock
1 Week Lead Time (Estimated)
2-3 Week Lead Time (Estimated)
Lead Time Varies, Please contact us for availability.