Electromatic Equipment Co. offers the TI-25S ultrasonic wall thickness gauge that features eight preset and two user-set velocities. The TI-25S has a measuring range of 0.025 to 19.999 inches (0.63 to 199.99 mm) with a resolution of .001 inches (0.01mm). It is switch selectable between English or metric units and displays results in inches, inches/microsecond, millimeters, and meters/second. The TI-25S features large numerals and a backlit display. Two AA batteries (alkaline or NiCad) provide power for up to 200 hours of use. The TI-25S is protected by a 5-year limited warranty. For more information call (800) 645-4330 or visit www.checkline.com.