Thickness Gage Module provides sub-micron resolution in thickness measurements, or picosecond resolution in time-of-flight readings. Frequency inspection range is 50 kHz to 400 MHz. With 32 gates/channel, ultrasonic system measures polymer coatings or plastic barrier layers as thin as 0.0005 in. at calibrated accuracy of ±0.0001 in. or better. ScanView Plus DAQ software is included.