Fluke 414D Laser Distance Meter Lazer Class-II;Laser Type-635nm,&lt;1mW. Instantly measures up to 50m (165ft.) Simple one-button operation instantly measures distance between two objects. Equipped with the most advanced laser technology for distance measurement. Built in pythagoras function indirectly measures height via two other measurements. Quick calculation of area (square feet/meters) and volume. Instantly measures up to 50m (165ft.) Simple one-button operation instantly measures distance between two objects Equipped with the most advanced laser technology for distance measurement Built in Pythagoras function indirectly measures height via two other measurements Quick calculation of area (square feet/meters) and volume