DESCRIZIONE
An apparatus and method for grading sensitive products. The apparatus and method treat the objects to be graded gently and are accurate and may be constructed so as to handle extremely large quantities. The grading device has grading channels that are wider at the outlet than at the intake. The belt machine draws the objects forward between two inclined belts which form the channel. An adjusting device is implemented perpendicular underneath the belts of the apparatus having alternatively arranged support members and adjusting members arranged on an adjusting screwing shaft. Both components have screwing sections which regulate an increase or a decrease in the gap between the support members when the adjusting screwing shaft is rotated.