Thickness grader TG is used to separate the thin grains mixed in finished rice. The drum made of stainless steel is a cylinder put slantingly with rectangle-shaped holes suitable for the standard thickness of rice grains. When the drum turns round, rice moves all along the length of the drum so that the small thin rice grains will be taken out.
The efficiency of small thin grain separation is high.
Finished rice is not abraded.
A rolling brush continuously cleanses the drum.