三级片视频播放,精品三级片在线观看,A级性爱视频,欧美+日韩+国产+无码+小说,亲子伦XX XX熟女,秋霞最新午夜伦伦A片黑狐,韩国理伦片漂亮的保拇,一边吃奶一边做边爱完整版,欧美放荡性护士videos

The GI20 grazing incidence interferometer provides high precision flatness measurement, suitable for use with lapped and semi-polished surfaces up to 150mm (6”)Ø. Unlike conventional fizeau interferometers, the GI20 can measure

non-reflective surfaces, ideal for analysing lapped and/or ground surfaces prior to final polishing. The interferogram is displayed on a LCD screen on the front of the unit.

• High precision flatness measurement of ground, lapped or semi-polished samples

• Measure 2μm per fringe with excellent clarity

• Surface roughness measurement from 1nm to 300nm Ra