因为上下送布牙能够准确的输送布料，不会产生缝制品的摩擦和扭曲，能够得到高晶质的缝制效果。
可以缝制打皱 嵌条 暗缝等多种工序，广泛对应薄料到厚料的各种面料，且线迹稳定美丽。

Top and bottom feed dogs on the variable top feed machines provide for positive and accurate fabric feed. This feature
prevents twesting and plyshifting of the fabric being sewn, achieving high quality production.
These machines neatly perform shirring, piping and blindstitch hemming, operations that are difficult with bottom
feeding alone, while preventing puckering. Pegasus'variable top feed machines ensure uniform quality during a wide
variety of sewing operations.