At work, my husband uses a rangefinder to take readings in the old buildings. It's a beautiful bike Leica, although with a rugged look before perestroika, but then what ball! One has the impression of carrying around a bowling alley at the bottom of briefcase! This rangefinder Bosch, he is discreet and lightweight, we put it in his pocket and he forgets. Nevertheless it seems solid and above all it has a few very cool features like: - A memory that finds a measure quon forgot to note, - Instant calculation of coins living spaces and volumes to be heated - And even a function for adding or subtracting the thickness of a wall (for example). In short a cheap tool that can be used for all but also for pros including there can not be some boorish too thick fingers ^^