波多野结衣一区二区三区高清-国产精品青青在线观看爽-黄污污网站-麻豆国产原创视频在线播放-青草网-色欲欲www成人网站

                

 
       The device is designed for determining double refraction in flat blanks and products of transparent and weakly tinted materials, and is used for quantitative assessment of double refraction value by Senarmon method with an error of not greater than 10 nm, for assessment of double refraction distribution in an object by interference tinting, for examining distribution of double refraction in an object with circularly polarized light. 
       Instrument advantages are: its large observable field allows monitoring of large blanks and products and simultaneous monitoring of a few specimens.