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black and white density meter

black and white density meter, Total:2 items.

In the international standard classification, black and white density meter involves: .

National Metrological Verification Regulations of the People's Republic of China, black and white density meter

• JJG 2028-2021 Measuring Instruments for Diffuse Transmission Visual Density(Black and White Density)
• JJG 2028-1989 Verification Scheme of Measuring Instruments for Diffuse Transmission Visual Density

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