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Here is such an interesting and ancient sorting for potatoes. Its advantages: small size and light weight, only 180 kg. mobility, this sorting can work anywhere. simple and reliable design, ease of maintenance. inexpensive cost the possibility of modification, for example, to make a drive from a tractor PTO or from an electric motor. Among the disadvantages I would note: damage to potatoes in a metal drum sorting into only three fractions Subscribe to the channel and visit social networks.