Annex B contains practical hints on gear measurement, highlighting common mistakes which are often made when measuring gears.
It must be borne in mind that there is an inherent duality between manufacturing errors and measurement errors. For example, measurements which show runout or swash merely indicate that the measurement axis is not the same as the production axis and can as easily be caused by an error in the measurement set-up as in that of manufacture.
Before diagnosing a manufacturing problem by use of the examples in Annex A, therefore, it is vital that the potential sources of measurement error (as discussed in Annex B) are eliminated.
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