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NBS 1963A 5 Bar Test Chart
NBS 1963A 5 Bar Test BS4657 with Elements of 5 Bars ranging from 1 line per mm to 18 lines per mm, adjacent numbers indicating lines per mm.
06B01093
£136.02
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B270 1.5mm thick
75mm x 75mm
Vacuum Deposited Chrome on Glass
From 1 line per mm to 18 lines per mm