Same ultrasonic thickness gauge platform as the standard TM-8811, measuring 0.05-7.9 in (1.5-200mm) across ten preset material types with automatic calibration and a low-battery indicator. This version ships with a NIST-traceable calibration certificate documenting the full data and measurement uncertainties, making it suitable where documented traceability is required. Includes probe, couplant, hard case, and batteries.