The Extech TKG150 Ultrasonic Thickness Gauge is designed in compact, handheld, rugged housing ideal for field use. Echo to Echo function measures metal thickness only, ignoring coatings. Differential mode displays the difference from a user‑entered reference value. Velocity mode displays acoustic sound speed.

Measurement range: 0.040–20 inches of steel with 5MHz probe (0.020–20in with optional 10MHz probe). Features include sunlight‑readable dot‑matrix display, records 100,000 readings, variable gain adjustment, B‑Scan cross‑section display, and fast minimum feature to capture minimum thicknesses. Multiple transducer support, on‑screen display in 8 languages.

Applications include boiler tubes, pressure vessels, storage tanks, ship hulls, pipes, steam lines, compressors, shafts, and bridge pins. Splash‑proof (IP54), high‑impact, compact housing. Battery life up to 50 hours (20 hours with backlight).