The Precision Rules ® line of offset perforating products are designed for critical kiss cutting/creasing applications. Precision Rules ® work in conjunction with all on-press finishing systems and are available in two heights, 0.6mm (.024″) and 0.9mm (.035″). Precision Rules ® maintain a tolerance of ±.0002″ providing an exact cut or crease with minimum pressure every time. Precision Rules ® are designed and manufactured to the same standards as all H. S. Boyd products and are diamond sharpened and heat treated to insure maximum durability.