ISO9001 1.Range: 0-20% 2.Deviation prism.Cover board 3.Benchmark,calibration screw 4.Rubber sleeve,Pancratic eyepiece Brief description1. Widely used in agriculture, farming brewing, food, drink processing industries2. High accuracy, easy to operate3. Portable, small volume, light weight, beautiful appearance4. With automatic temperature compensation function Measuring Range: 0-20%Resolution: 0. ...