Both rotallies for thick and thin knitting pins are easily placed onto the pins and pushed down until firmly seated. The knitted rows can be counted on the two-digit display directly on the knitting pin. This is particularly helpful when knitting work is suddenly interrupted or stopped for a long time. These useful knitting aids cannot forget the configured row amount and are reliably fastened to the knitting work thanks to their fixation on the knitting pin. It saves a lot of time that would normally be used for re-counting the rows.