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TKG100: Digital Ultrasonic Thickness Gauge

Compact rugged meter for non-destructive thickness measurements

View Datasheet > TKG100


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 2oz bottle of coolant, 2 AA batteries, 5MHz Transducer and hard carrying case.

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)



Illuminating Keypad

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

Battery Life

Up to 50 hrs (20hrs w/backlighting)

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