The 419D distance meters offer these enhanced features: 

Measure up to 80 m (260 ft) Higher accuracy: +/-1 mm (0.04 in) View more data with backlit, three-line display Full Pythagoras function for height measurements Storage of 20 complete displays for quick recall Audible keypad feedback Minimum/Maximum function Tripod mode for mounting meter on a tripod when measuring long distances Stake Out feature helps you mark out defined lengths such as when constructing wooden frames Automated End-piece Correction for measuring from an edge or corner --a built-in sensor detects the position of this bracket and automatically changes the reference point. Enhanced environmental protection:IP54-rated as dust and water spray resistant Improved battery life of 5000 measurements with auto laser off and auto power off features.