This 3-4" outside micrometer is a reliable tool for measuring and layout tasks. With a precision of up to 0.0001", it is perfect for a wide range of applications. Ideal for both home and workshop use. Its durable construction ensures long-lasting performance, while the easy-to-use interface makes it simple to operate. Whether you're a professional or a DIY enthusiast, this outside micrometer is a must-have tool for any measuring and layout task.