One of the most popular questions consultants and engineers ask… ‘how accurate is it?’
?How accurate is what?
Firstly, we have an issue, do we all understand accuracy? Do we know the difference between accuracy and precision? Measurement systems can be accurate but not precise, precise but not accurate, neither, or both.
Some people who ask the question haven’t even thought about it. Most professionals think about it and probably understand it. To a surveyor, this question poses problems.
a. The working environment
b. The weather (nature)
c. People (operators & public)
d. Calibration & Adjustments
e. Repeatability
f. Object being observed
g. Distances
h. Grids & Scales
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