The new Model 705 handheld ultrasonic thickness gauge from NDT International Inc. (West Chester, Pa., U.S.A) measures, from one side, the thickness of metal structures (piping, storage tanks, pressure vessels, hulls, etc.) to within ±0.001 inch accuracy. The unit's measurement range runs from 0.04 inch to 20 inches (dependent on transducer and material), with a temperature range of -15°C to 49°C (5°F to 120°F). Useful in determining whether inner walls have eroded or corroded without cutting or drilling, the battery-powered device weighs only 12 oz and is priced at less than $800 (USD), with a full two-year warranty. Features include liquid crystal display (English or metric read-out), switchable backlight, selectable and much more.