The Leica NA730 level defies the toughest of building site environments. Heavy rain, dusty environment and vibrations from heavy construction machinery do not stop it. Save time and money with no need for regular checks in the workshop or constant readjustment. Features include simple operation, a cover glass which allows no conversion from degrees to gon, convenient pointing, comfortable read-out, nitrogen filled telescope prevents the lens from fogging up keeping a clear view, outstanding contrast, impact-resistant, and it is water-tight and dust-tight (IP 57 Standard).