The Leica Disto E7400X

A lot of manufacturer's talk about robustness, but only a few go to such lengths as Leica Geosystems.  To be sure that their
Laser Distance Meters operate precisely even in very harsh wet and dusty conditions, they test it at every stage of its development. 

The Leica Disto E7400X is the only laser distance meter protected against jet water and is completely sealed against water and dust according to the IP65 certificate.  In addition, it passes drop tests of up to 6 ft in height.

In my opinion this is the best value for the dollar when looking to purchase a laser distance meter.