Complex sentence: The knives are tested by the Queen's Remembrancer by taking a hazel stick, one cubit in length, and bending it over the blunt knife and leaving a mark, and the stick is split in two with the sharp knife.
Split into simpler sentences: The knives are tested by the Queen's Remembrancer by taking a hazel stick, one cubit in length, and bending it over the blunt knife and leaving a mark. Then the stick is split in two with the sharp knife.