With 2 ultra-precision scribing rods with inlaid metric scale and scribing tips made of steel. Scribing rod arrest mechanism with brass wing screw. Fence is faced with Ironwood (Lignum Vitae) for durability. Detachable fence for scribing curved surfaces stores on back side of head. Marking gauges are precision tools for the parallel scribing of width and thickness measurements. Made of the best quality white beech, they comply with all requirements imposed on a modern scribing instrument for woodworking operations.