When dressmaking or designing garments notches are normally cut around with a small triangle or a slit. A pattern notcher can do this very easily, match notch points during construction. Get your patterns looking professional just by the merit of having even and accurate notches. ideal for use when making garments to mark pleats, seams, darts and alignments. Save time with this simple tool to ensure accurate marking of your pattern key points. Notch size 8.5mm x 1.5mm. Top quality, hardened, forged steel with a durable leaf-spring mechanism.