Welcome to EDS Precision Systems. We provide the patented Precision Water Level (PWL), which reduces large leveling project times by up to 80%. PWLs have an accuracy of +/- 0.0001 inches (+/- 2.5 µm) at 200 feet (61m), making them one of the most accurate levels in the world at that distance. They are also relatively inexpensive (1% of the price of some laser trackers), portable, do not require line of sight, and are easy to use (no certification required).