Separate nuts according to three sizes.
The calibration sieve is used to sort nuts into 3 different sizes. The calibration sieve is placed over 3 fruit boxes. The openings of the sieve, i.e. the calibration size, becomes larger from left to right.
For calibration, place the walnuts on the left side and slide them from left to right over the calibration sieve. The calibration sieve is also available for hazelnuts. With the calibration sieve for hazelnuts, the calibration sizes are considerably smaller and this means they are adapted to hazelnuts.