The Dakota NDT PMX4-DL high penetration thickness gauge features multiple high‑voltage pulser options (spike 200V, square wave 400V, tone burst 400V) and filters tuned for lower frequency transducers (500 kHz–10 MHz), accommodating fiberglass, carbon fiber, cast metals, rubber, HDPE, FRP, lead, steels, and aluminums. Typical applications include fiberglass sheets, pipes, storage tanks, aerospace composites, boat hulls, and conveyor belts.

Measurement modes: Pulse-Echo, Echo-Echo, Echo-Echo Verify. Receiver gain 110dB (manual or AGC). Timing: precision TCXO with 100MHz 8‑bit digitizer. Resolution selectable ±0.01in (0.1mm) or ±0.001in (0.01mm). Velocity range 0.0122–0.7300 in/μs (309.88–18,542 m/s). Display views: A‑Scan (±Rectified, RF), B‑Scan, Large Digits, Scan Bar, Bar Graph. Scan mode 250 readings/second.

4GB internal memory, 64 custom user‑definable setups. 1/8 VGA grayscale display. Factory calibration traceable to NIST. Ideal for precision machining, stamping, aircraft, automotive, and thin plastics.