Re: Newbie question on surveying equipment!
Posted: Jan 26, 2010 11:25 amI can't say balloons have used a lot to measure ceiling heights, but they have been used quite well and quite efficiently--and in caves other than Carlsbad. There was an article in an old Compass and Tape.
And trig works well too. It is not that hard.
And trig works well too. It is not that hard.