The M310UW is designed to operate underwater with an effective scanning distance of between 1.5 feet and 10 feet (0.46m to 3m) from a target surface. The M310UW extends the usage range of measurements, compared to the M210UW, by a factor of more than three times, potentially shortening large project scanning time for the dimensioning of cracks, welds and other structural, man-made or geological features.