Leica Disto X310 (E7400X) Digital Laser Distance Meter, Distance Measurer - Water Jet Protection, Red/Black The E7400x is the equivalent US model and X310 can be converted to m, ft, and inch.  0.04 in /  1 mm ACCURACY up to 265 ft / up to 120 m Measuring Range. Water Jet Protection and Dust-Tight. (2-Meter Drop Rating) Ruggedized IP65 CERTIFIED. Smart Horizontal, Min/Max, Area, Painter, Pythagoras, Height Tracking and More Functions Included. Intelligent automatic end piece for hard to reach corners. Last 20 measurement memory, 155g (5.5 oz), Type AAA 2  1.5 V.