DA014

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Target NBS 1963A 2"X2" NEG For Vision/Optical systems checking. Elements of two targets with five lines at right angles vary from 1.0 to 18.0 Cycles/mm (Linewidths 0.5mm to 0.028mm ). Negative target; Clear lines on an opaque field.On stable glass substrate etched in reflective chrome. Pattern on top surface. (Right reading looking through.) Click here to download drawing. Show more