A lubrication oil film just a few nm thick is added to the surface of video tape and hard disks. The AC-2 is used to inspect the thickness of this film.
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Fig.1 Metal tape for Hi8 video
A lubrication oil film just a few nm thick is added to the surface of video tape and hard disks. The AC-2 is used to inspect the thickness of this film.
Fig.1 Metal tape for Hi8 video