Low-Power
Fortunately, lasers are used for leveling surveys because their beams are narrow, not because high levels of power are required.
Surveying
Gotta Start Somewhere
The picture above is the answer to a question that people outside the field rarely think about: how do you know where your building actually is? There are two common ways of thinking about location: using a map (at any scale, up to maps that are detailed to the inch like Sanborn Fire maps) or …