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TI-45N Ultrasonic Wall Thickness Gauge

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Measuring Range in Steel
0.040 - 8.00 inches
1.00 - 200.0 mm

The CHECK-LINE TI-45NA Ultrasonic Wall Thickness Gauge accurately measures wall thickness and the extent of corrosion of all metals, ceramics, glass and most rigid plastics - from only one side!

The attractive, ergonomic housing design is extremely compact, lightweight and rugged. It fits comfortably in the palm of your hand and incorporates a back light that illuminates the LCD in poorly lit areas.


  • TI-45NA includes new Pipe Mode for stable measurement on small diameter pipe (1" and larger)
  • Resolution of 0.001" (0.01mm)
  • Extremely small & lightweight operates from a single AA battery
  • Switch-selectable units - inches or mm
  • Built-in calibration test plate
  • Quick display update with last reading retained on the display
  • Display symbols alert user to poor coupling and low battery conditions
  • TI-45N-HD includes slip-on, ergonomic rubber sleeve for improved grip and additional physical protection
  • User Adjustment of Acoustic Velocity or selection 10 preset velocities

Related Products

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Ultrasonic Wall Thickness Gauge
- Resolution of 0.001" (0.01mm) with Switch-selectable units of inches or mm
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Certified Steel Test Blocks
- Precision Machined and Finished
- Includes Wooden Storage Box
- Includes NIST-Traceable Report and Test Data
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Steel Test Block without certification
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Coupling Fluid
- Temp Range: 0 - 200 °F, -18 - 93 °C
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5mhz, 10mm Transducer for TI-45N and TI-40N Ultrasonic Thickness Gauges
- 5mhz, 10mm Probe
- 39" Cable with 2 LEMO Connectors
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Centering Shell for CS-5Z10NDT Probe

Complete Kit

The TI-45NA is supplied as a complete kit with the gauge and wrist strap, probe and cable assembly, 2 oz. bottle of coupling fluid, battery and instruction manual -- all supplied in a fitted, hard plastic carrying.

Measuring Limits

concave convex Minimum Radius for Convex Surfaces 1" (27 mm)
Minimum Radius for Concave Surfaces 3" (76.2 mm)
headroom Minimum Headroom 3" (76.2 mm)
diameter Minimum Sample Diameter 0.5" (12.7 mm)
thicknessfnfe Minimum Substrate Thickness - F na
Minimum Substrate Thickness - NFe na


Range in Steel0.040 - 8.000" (1.0 - 200.0 mm)
Resolution.001" (0.01 mm)
Display4½ - digit LCD display, 0.39" (10mm) high with push button illumination
Velocity Range1,000 - 12,000 m/sec, continuously adjustable
Probe5 MHz, .39" (10 mm) diameter without Centering Shell
Cable39" (1m) 2-wire, long cable with quick-disconnect connectors
Minimum Pipe Size1" nominal (27mm) steel pipe, wall thickness starting at 0.060" (1.50 mm)
Temp. LimitsAmbient: 25 to 125° F (-5 to 50° C)
Material: -15 to 140° F (-10 to 60° C)
Calibration Plate0.200" (5.00mm) steel plate, built into the front of the housing
Battery Type1x AA battery
Battery Life200 hours
WeightGauge: 7 ounces (200 g)
Size5.2" x 2.7" x 1.1"
(131 x 68 x 29 mm)
WarrantyGauge: 1 years
Probe: 90 days
Accessories IncludedFitted, hard-plastic carrying case, probe shell attachment, 2 oz. bottle of coupling fluid, 1 spare battery and operating instruction guide


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  Item Description Price  
Ultrasonic Wall Thickness Gauge kit with 5mhz, 10mm probe
Ultrasonic Wall Thickness Gauge kit with 5mhz, 10mm probe and protective rubber sleeve
Replaced by model TI-45NA
NIST Traceable Calibration Certificate
Coupling Fluid - 4oz
5mhz, 10mm Transducer for TI-45N and TI-40N Ultrasonic Thickness Gauges
CS-5Z10NDT Centering Shell
4-pack 2300mAh AA Ni-MH Rechargeable Batteries & Charger Kit
In stock
1 Week Lead Time (Estimated)
2-3 Week Lead Time (Estimated)
Lead Time Varies, Please contact us for availability.