I’ve never understood it, i know that instruments like the theodolite measure angles between two points, but from what i can understand is that it’s just measuring distance and angles between points? so is it literally just geometry of the land/earth?
In: Engineering
In addition to the geometry within a particular space, it also tries to tie it into the larger geography. Typically a surveyor will start by finding a reference point of known position and elevation (literally a landmark, and this is where that term comes from) and then measure the area they’re currently surveying in relation to that. So in addition to getting relative elevations and positions, they can derive absolute values for them as well.
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