Inspection technology for better future.
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3.4.4 Image freezing
：
Freeze preview image.
：
Unlock frozen preview image.
3.4.5 Scale
：
Scale, software virtual scale function.
：
Display contrast measuring length scale.
：
Display contrast measuring diameter scale.
3.4.6 Aspect Ratio
：
Adjust image scale to 4:3.
：
Adjust image scale to 16:9.
