Precision:(features of measuring instrument)
Old:
Precision is degree to which the instrument gives repeated measurement of the same standard.
(Kalpakjian S. , Schmid S.R. , Manufacturing Engineering and Technology, p. 1101)
New: (better)
Precision can be defined as the quality of being sharply or clearly determined. A precision measuring instrument is one that expresses the property it is measuring as some very small fraction of a reference unit whether that unit is an inch, a day, a pound, or a gallon.
No comments:
Post a Comment