Precise center finding: builtin guide ensures accurate centering for symmetric results and repeatable positioning. Onehand friendly: scale markings and an integrated grip allow quick, precise alignment without extra tools. Timesaving design: reduces measurement steps in patterning, improving efficiency during complex layouts. Durable PP construction: sturdy, lightweight material provides lasting strength and reliability across tasks. Compact handheld form: small, pocketable size designed for easy handheld operation. Wide compatibility: suitable for fabric, wood, and metal projects; works with round or symmetric components and standard center marks. Use scenarios: Sewing and fabric pattern work to locate fabric center and align patterns. Wood or metalworking to mark centers on discs or plates before drilling or cutting. Craft projects requiring repeatable centering for symmetry.