Yes, it is an imitation,you may say it is a imitation of Allgaier screener,I have to say”NO” to above description, because it is not that complicated,It is just an imitation of my grandmother’s hand sieve, a mechanical imitation of a hand sieve movement, that’s all an Unit-Fine tumbler screen is about,this video is pictured when our customer a grading iron powder, the conclusion is: if you grade 100 mesh iron powder, the capacity is 1500 kg per hour, and 400 mesh, it is 800 kg per hour.