NMA MS12:1977被替代
Method For Measuring The Screen Luminance, Contrast And Reflectance Of Microform Readers
出版：National Management Association
專家解讀視頻
基本信息
標準編號： NMA MS12:1977
標準類別：Standard
出版單位：National Management Association
標準頁數：0
標準簡介
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.
