This 0-1" micrometer is made of steel and comes with a protective case. It has been thoroughly inspected and is in excellent working condition. The micrometer type is tube micrometer, which is perfect for measuring the inside diameter of tubes or cylindrical objects. This micrometer is ideal for use in business and industrial settings, particularly in CNC, metalworking, and manufacturing industries. Whether you are a professional or hobbyist, this micrometer is perfect for accurate measurements that will help you achieve precise results. Purchase this micrometer today and elevate your measuring game!