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MX-2 Ultrasonic Wall Thickness Gauge

The MX-2 is ideal for the person that tests a few different materials regularly. The MX-2 contains 8 velocities of common materials and two velocities that can be set using a simple software program.

Even in dim light conditions, the tool's backlit display is easy to read. The unit operates for up to 200 hours on a single set of batteries.

The MX-2 comes complete, ready to use, and is protected by Dakota Ultrasonics 5 year limited warranty.

Velocity Settings

The MX-2 has 8 set velocities and 2 that are custom to the user's applications. The set velocities are as follows:

1. Steel 4340-(.233)
2. Stainless Steel 303-( .223 )
3. Aluminum 2024 - ( .251 )
4. Cast Iron -(.179 )
5. Plexiglass -(.106 )
6. PVC - (.094)
7. Polystyrene (.092)
8. Polyurethane -(.070 )
9. Custom
10. Custom


  • Measurements displayed in inches, inches/microsecond, millimeters, and meters/second.
  • Measures from 0.025 to 19.999 inches (0.63 to 199.99 millimeters) switch to select English or metric units.
  • Multi-function 4.5 digit liquid crystal display with 0.500 inch numerals, backlit for use in poor light conditions.
  • Four readings per second for single point measurements.
  • 8 pre-set velocities and 2 custom velocities
  • Ability to change between velocities without the use of computer software

Typical Applications

Typical Applications

Complete Kit

The MX-2 is supplied as a complete kit with the gauge, probe, 4 oz. bottle of coupling fluid, 2 AA batteries, NIST Calibration Certificate, and Operating Instruction Manual - all in a foam-fitted carrying case.

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Measuring Limits

Minimum Radius for Convex Surfaces Minimum Radius for Convex Surfaces 9 mm (0.350")
Minimum Radius for Concave Surfaces 77 mm (3")
Minimum Radius for Concave Surfaces Minimum Headroom 26 mm (1")
 Minimum Sample Diameter Minimum Sample Diameter 4 mm (0.150")
Minimum Substrate Thickness - F Minimum Substrate Thickness - F N/A
Minimum Substrate Thickness - NFe N/A


Measuring Range
0.63 to 199.99 millimeters
0.025 to 19.999 inches
0.01 millimeter
0.001 inch
Velocity Range
1250 to 10,000 meters/sec
.0492 to .3937 in/µs
2.5 W x 4.75 H x 1.25 D inches
Range in Steel
0.60-150.0 mm
(0.025-6.00" )
4½ - Digit, 0.5" Backlit LCD
1/4", 5 MHz, actual wearface is 5/8" (17mm)
4 ft. (1.2 m) waterproof cable with non-polarized, quick-disconnect connectors. Optional lengths up to 50 ft. (15 m).
Temp. Limits
Ambient:- 30 to 50° C (-20 to 120° F)
Material: -20 to 100° C (-0 to 200° F)
Special high temperature probes are optionally available.
Battery Type
Two 1.5V alkaline or 1.2V NiCad AA cells.
Battery Life
Typically operates for 200 hours on alkaline and 130 hours on NiCad.
283 g (10 ounces)
Accessories Included
Probe/cable assembly. 4 oz. bottle of coupling fluid, NIST Calibration Certificate, 2 AA batteries, operating instructions, hard-plastic carrying case.
Gauge: 5 Years
Probes: 90 Days
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