This L.S. Starrett No. 440 Depth Micrometer Set is perfect for precise measurements in metalworking. The set includes a depth micrometer with a 0-6" range, a 2.5" base, and a carrying case for easy transport and storage. The micrometer is designed with a mechanical reading and a resolution of 0.00100 in, ensuring accurate and reliable measurements. The Starrett brand is known for its high-quality tools and this depth micrometer is no exception. It is ideal for use in various metalworking applications and is a must-have for any professional or DIY enthusiast. Whether you're measuring depths in metalworking or need a precise measurement for your next project, this set is the perfect choice.