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TKG150: Digital Ultrasonic Thickness Gauge/Datalogger

Compact rugged meter for non-destructive thickness measurements

View Datasheet > TKG150


The TKG150 is a Digital Ultrasonic Thickness Gauge/Data logger. Compact rugged meter for non-destructive thickness measurements. Extech offers Thickness Gauges designed in compact, handheld, rugged housing ideal for field use. The ultrasonic technology allows for non-destructive thickness measurements for primarily steel structures. Complete with protective holster, 2oz bottle of coolant, 2 AA batteries, 5MHz Transducer, hard carrying case, USB cable and Exporter software.

Additional information

Steel Thickness Range

5MHz probe: 0.040 to 20" (1.0 to 508mm); 10MHz probe: 0.030" to 2" (0.76mm to 50.8mm)

Material velocity calibration range

0.200 to 0.7362 in/μS (0.508 to 18.699mm/μS)


English, French, Spanish, Italian, Czech, German, Portuguese, Slovak, Finnish, and Hungarian

Hold Mode

Holds display to retain last thickness reading with reverse video display

Freeze Mode

Freezes display (ideal for high temperature readings)




Audible beeping; illuminae flashing display and keypad; and vibration feedback

Illuminating Keypad

F1 = Red, F2 = Yellow, F3 = Green for easy, go/no-go testing

Gain - Variable adjustment

Low, Standard, High

B-Scan - Displays a cross section of the test piece

Displays a visual cross section of inspection area with no correlation to distance. B-Scan alarm colors consist of: Red = below minimum/above maximum; Yellow = Caution; and Green = Good.

Echo to Echo

Measure the metal thickness only (paint & coatings do not affect base material thickness value)

Differential Mode

Displays the difference from the actual thickness measurement and a user entered reference value

Velocity Mode

Displays acoustic sound speed to measure thickness of unknown materials


Stores 50k readings (expandable to 100k) and 5, 000 waveforms; file names up to 20 characters long; and the included Extech XPorter software extracts .csv data files that can be opened for viewing in MS Excel, Notepad, or Wordpad.

Battery Life

Up to 50 hrs (20hrs w/backlighting)

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