NMA MS12:1977被替代
Method For Measuring The Screen Luminance, Contrast And Reflectance Of Microform Readers
出版：National Management Association
专家解读视频
基本信息
标准编号： NMA MS12:1977
标准类别：Standard
出版单位：National Management Association
标准页数：0
标准简介
Outlines ways of measuring image contrast, screen luminance and screen reflectance of microform readers that have translucent or built in opaque screens up to 46 x 61 cm (18 x 24 inches). Also outlines the type of instrumentation needed and dimensional units.
