levels during a measurement run.
Depending on the part characteristics and the feature being measured, the right combination of lighting may aid in bringing out a particular feature. Take time to experiment by balancing the available light sources.
7.4 Magnification Strategy
In general, higher magnification provides greater resolution and accuracy; however, not all features should be inspected at the highest available magnification. Too high of a magnification can make it difficult to discern edges by exaggerating edge defects such as burrs or chips. Try decreasing the magnification until the edge is more clearly identifiable. Also consider factors such as tolerance requirements, manufacturing processes, functional requirements, and optical characteristics of the part. Features with loose tolerances might not need to be inspected at high magnification. Select the magnification best suited for the requirements.
7.5 Focus Strategy
Accurate measurement requires proper focus of the image. When measuring flat parts, always first ensure that the stage glass has been leveled. When using zoom optics, first focus the image at highest magnification, then decrease the magnification to the desired level.
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