Rotary axis is a key component in the process of ring engraving. It refers to the mechanism that allows the ring to rotate around its axis, enabling the engraving tool to make precise and intricate markings on its surface. The rotary axis can be controlled manually or through computerized systems, allowing for greater precision and flexibility in the engraving process.

This technology has revolutionized the art of ring engraving, making it easier for jewelers to create personalized and detailed designs on a variety of ring materials.