What is 1/4 seam allowance CM?
For international suitability purposes, use 3/8″ (1 cm) or 5/8″ (1.5 cm) as seam allowances. 1/4″ translates well too, to 0.5 cm. They’re not exact (1/4″ is actually 6 mm), but they’re close enough to be usable.
What is 1/4 on a sewing machine?
Accurate 1/4″ Seam Allowances are achieved with the Quarter Inch Foot because the distance from center needle opening to the right hand edge of the needle, is a 1/4″. Singer Sewing Machine is set to straight stitch, center the needle position.