Quote:
Originally Posted by turtle
not necessarily. distance is a better measure of distance than pressure. it's just a question of calibration.
fred
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Indeed distance is much better then the indirect pressure measurements, but unfortunately line stretch of line over 100m is a mayor problem Pre stretching is a standard although unprecise method to guestimate the final line length. A little current, or prolonged effect of the weight of the cable itself and big bottom weight on the cable can easily extend the length a lot.
Also with lines of 100+ meter keeping it perfectly vertical is also a problem.
With all these problems maintaining a one meter error margin seems to me rather difficult.
