The Stresstel T-Mike EM+ thickness gauge has all of the features of the T-Mike EM, but adds thru paint mode. This feature allows you to obtain accurate wall thickness measurements without scraping away paint, by correcting for coating thickness with a single push of a button. - Thru paint mode - Automatic probe recognition and automatic probe zeroing simplify setup and calibration - High/low limit alarm indicator light - Rapid scan mode samples 25 times per second and captures the minimum thickness - Differential measurement mode displays +/- from a user-specified nominal thickness - 0.025" to 20.00" actual measurement range depending on probe type and application - Manual and Automatic Gain Control (AGC) - Single or two point calibration modes - Adjustable sound velocity for simple calibration - Backlight - Auto Shut Off - Full two-year warranty on parts and labor excluding batteries, transducer and cable. - Made in USA Kit contents: - T-Mike EM+ Instrument - 5.0 MHz, 0.5" diameter transducer with permanently attached cable (other probes are available to suit various applications) - Two 1.5V AA Alkaline Batteries - Hard Shell Carry Case - Couplant - Operating Manual - Certificate of Calibration Approximate shipping weight of T-Mike corrosion gauges is 3 lbs. This item usually ships in 2 to 3 weeks.