NBS 5 Bar Test Ref 1963A BS 4657

NBS 5 Bar Test (BS4657)

1-18 lines per mm Chrome Surface Image B270 Glass 75mm x 75mm

This consists of elements of 5 bars ranging from 1 line per mm to 18 lines per mm, with adjacent numbers indicating the number of lines per mm. Produced as a vacuum deposited chrome image on 75mm x 75mm glass.

SKU: 68098-11
Pack: Each
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