Designed to accept observation tube upto 220 mm length. Its improved rotating half shadow system at the front ensures perfect focus and clear definition. With angular glass scale 0-360Â°,divided into degrees and reading upto 0.05Â° with micrometer. A sugar scale from 30Â° to 120Â° reads upto 0.1 sugar degree. Supplied complete with two polarimeter tubes, 100 mm and 200 mm, and dust cover.