Card puncher or perforator (Brother Card Punch KA-451), a classic manual tool primarily used with automatic knitting machines (like the Brother brand) to punch paper cards (Punch Cards) and design or create new patterns and graphics for embroidery and knitting. Key Details: Brand: Brother (likely model KA-451). Function: To make precise and accurately positioned holes on plastic or paper knitting cards for forming stitches and patterns. Features: Manual design in beige with a brown transparent part to collect paper scraps resulting from punching.