What is a back error ?

What is a back error ?
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1 Answer

Answer :

: Backwards Errors: This type of error usually occurs when the instruments , nuts, etc. , which are made based on the principle , are a little old. This is because too much use can cause the nut hole to become larger or the screw to become loose. As a result the same amount of rotation on both sides of the screw does not exceed the same amount of distance. This type of error is called backwards error. This error can be avoided by turning the screw in the same direction while taking the lesson.
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