The built-in ruler and guide are helpful for keeping your measurements precise at all times. Seam Allowances and Recommendations: 3/8' (10mm) – Some Children’s Clothing and Doll Clothing 1/2'(12.7mm) – Home Décor and Craft Projects 5/8' (16mm) – Garment Sewing 1' (25mm) – Garment tailoring and Hems

This foot is compatible with most Baby Lock machines.