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MX-3-ATRR Replaced by ZX-3

Made in USA
Click images to enlarge.
Replaced by ZX-3

5 year warrantyMeasuring Rangel
ACRYLIC: 0.030-0.500" (0.75-12.50mm)
STEEL: 0.040-6.00" (1.00-150.0 mm)

The MX-3-ATRR Wall Thickness Gauge is specially designed to measure the thickness of acrylic from one side.

The MX-3-ATRR can be used in a Single Thickness Reading mode or in a Scan mode , where the probe is dragged over a large measuring area. The minimum thickness reading recorded during the "scan" will be displayed.

The gauge is impact-resistant and environmentally sealed to provide trouble-free operation under the toughest field conditions. Made in the USA and covered by a 5-Year warranty.


  • Resolution of 0.001 inch (0.01 mm)
  • Large, backlit LCD display retains last reading
  • Simple operator controls virtually eliminate training
  • Special-purpose probes are offered for a variety of applications
  • Switch-selected units for inches or mm
  • Metal housing is environmentally sealed to provide trouble-free operation under the toughest field conditions
  • CE Certified, made in USA with 5-Year warranty
  • Includes NIST Calibration Certificate
  • IP 65 Rated

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Complete Kit

The MX-3-ATRR 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.

Measuring Limits

Minimum Radius for Convex Surfaces 0.350" (8.89 mm)
Minimum Radius for Concave Surfaces 3" (76.2 mm)
Minimum Headroom 1" (25.0 mm)
Minimum Sample Diameter 0.150" (3.8 mm)
Minimum Substrate Thickness - F N/A
Minimum Substrate Thickness - NFe N/A


RangeACRYLIC: 0.030-0.500" (0.75-12.50mm)
STEEL: 0.040-6.00" (1.00-150.0 mm)
Resolution.001" (0.01 mm)
Display4½ - Digit, 0.5" Backlit LCD
Velocity Range6,500-33,000 ft./sec (2000-10,000 m/sec.)
Probe0.250" Diameter (6.35 mm), 5 MHz
Cable4 ft. (1.2 m) waterproof cable with non-polarized, quick-disconnect connectors. Optional lengths up to 50 ft. (15 m).
Temp. LimitsAmbient: -20 to 120° F (-30 to 50° C)
Material: -0 to 200° F (-20 to 100° C
Special high temperature probes are optionally available.
Battery TypeTwo AA batteries
Battery Life200 hours
Weight7 ounces (196 g)
Size2.5 x 4.5 x 1.25"
(64 x 114 x 32 mm)
Accessories IncludedProbe/cable assembly. 4 oz. bottle of coupling fluid, NIST Calibration Certificate, 2 AA batteries, operating instructions, hard-plastic carrying case.
WarrantyGauge: 5 Years
Probes: 90 Days

Buy Now

Item Description Price
Wall Thickness Gauge for Acrylic Aircraft Windows Replaced by ZX-3

Protective Holder for Most TI Series Gauges, F-112-0005
Coupling Fluid - 12 oz / 354 ml
V-Block Transducer Holder (For 3/16" & 1/4" Transducers only), F-000-7001
1/4" diameter, 5 MHz, dual element transducer
1/2" diameter, 5.00 MHz dual element transducer
In stock
1 Week Lead Time (Estimated)
2-3 Week Lead Time (Estimated)
Lead Time Varies, Please contact us for availability.