We Checkline Europe B.V. would like to use cookies and similar technologies in order to optimize your shopping experience and this requires your consent. By clicking on the "Accept cookies" button you agree to our use of cookies and similar technologies. If you do not agree, you can refuse the use or customize settings for the respective cookies by clicking on the button "Cookie Settings".You also have the possibility to specify that only certain cookies, which we use on our website, should be activated. This banner will be displayed until you have selected your cookie preferences. If you decide against the use of cookies, we will not use cookies nor similar technologies, except those that are essential for the proper functioning of the website. Click here for our privacy policy

TI-45N Ultrasonic Wall Thickness Gauge

Made in the USAThe CHECKLINE TI-45N is an innovative gauge designed to measure the accurate wall thickness and the extent of corrosion of a wide variety of materials such as Iron, stainless steel, ceramics, glass and the most rigid plastics.

It is easy to measure the wall thickness by just positioning the probe on the desired location.

The housing is extremely compact, lightweight and rugged. It has a back light that illuminates the LCD in poorly lit areas and it fits comfortably in the palm of our hand.

The CHECKLINE TI-45N can instantly measure the wall thickness from one side of the material.

Measuring Range:
1.00 - 200.0 mm
0.040 - 8.00 inches


  • Extremely compact & lightweight
  • Resolution of 0.01mm (0.001")
  • Switch-selectable units - inches or mm
  • Quick display update with last reading retained on the display
  • Built-in calibration test plate
  • 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
  • TI-45NA includes new Pipe Mode for stable measurement on small diameter pipe (1" and larger)


TI-SB Steel Test Block with NIST-Traceable Certificate

  • Precision Machined and Finished
  • Includes NIST Report and Test Data

More details

TI-SB Steel Test Block with NIST-Traceable Certificate 125793

TI-SB4 Uncertified Steel Test Block

  • Uncertified Steel Test Block
  • For convenient confirmation of thickness gauge calibration

More details

TI-SB4 Uncertified Steel Test Block 126277

CF-AN Coupling Fluid

  • Used to create an ultrasonic coupling between the probe and material to be measured
  • Available in different volumes - 125ml / 250ml / 500ml / 1ltr / 5ltr / 25ltr

More details

CF-AN Coupling Fluid 126455

CF-4H High Temperature Coupling Fluid

  • Temperature Range:
    0° to 600° F
    -18° to 315° C

More details

CF-4H High Temperature Coupling Fluid 126919

CF-4H-950F High Temperature Coupling Fluid

  • Temperature range from 316ºC to 404 ºC

More details

CF-4H-950F High Temperature Coupling Fluid 127149

Cic-Wall | Wall Thickness Gauge Calibration

  • Easy planning of calibration
  • Short turnaround
  • Exclusively in accordance with DIN 55 350 Part 18, § 4.2.2, DIN ISO 8402 Part 1
  • Possibility to adjust and repair

More details

Cic-Wall | Wall Thickness Gauge Calibration 127035

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, batteries and instruction manual -- all supplied in a fitted, hard plastic carrying.

Measuring Limits
Minimum Radius for Convex Surfaces Minimum Radius for Convex Surfaces 25.4 mm (1")
Minimum Radius for Concave Surfaces 76.2 mm (3")
Minimum Radius for Concave Surfaces Minimum Headroom 76.2 mm (3")
Minimum Sample Diameter Minimum Sample Diameter 12.7 mm (0.5")
Minimum Substrate Thickness - F Minimum Substrate Thickness - F NA
Minimum Substrate Thickness - NFe NA

Range:1.0 - 200.0 mm (0.040 - 8.000")
Resolution:0.01 mm (.001")
Display:4½ - digit LCD display, 10mm high with push button illumination
Velocity Range:1.000 – 12.000 m/sec
(3.250 – 39.000 ft/sec)
continuously adjustable
Probe:5 MHz, 10 mm (.39") diameter without Centering Shell
Cable:1m (39") 2-wire, long cable with quick-disconnect connectors
Minimum Pipe Size:30mm nominal (1") steel pipe
Temp. Limits:Ambient: -5 to 50° C (25 to 125° F)
Material: -10 to 60° C (-15 to 140° F)
Calibration Plate:6.35mm (0.250") steel plate, built into the front of the housing
Battery Type:Two AA batteries
Battery Life:200 hours
Weight:Gauge: 200 g (7 ounces)
Size:131 x 68 x 29 mm
(5.2" x 2.7" x 1.1")
Warranty:Gauge: 1 year
Probe: 90 days
Accessories Included:Fitted, hard-plastic carrying case, probe shell attachment, 2 oz. bottle of coupling fluid, 1 spare battery and operating instruction guide

Buy Now

TI-45NA Wall Thickness Gauge
€ 1.450,00 

CF-AN-250ml Coupling Fluid 250ml Bottle
€ 15,00 
€ 221,00 
5Z10NDT-M Spare / Replacement Probe for TI-45N
€ 515,50 
TI-SB4 Uncertified Steel Test Block
€ 140,00 
TI-SB-4H Steel Test block
€ 386,00 
TI-SB-4L Steel Test block Certified NIST
€ 386,00 
TI-SB-5L Certified Steel Test Step Block
€ 386,00 
All mentioned prices are excluding VAT & excluding shipment costs.
Availability: Available: 1 - 3 days, Delivery time: 1 - 3 weeks, special order request

Request offer
Checkline Europe
Your information request is sent!
We'll contact you as soon as possible.