Range: 2-20", Extension Rods: 0.5", 1", 2" (2 pcs), 4", 8", Accuracy: Metric(3+n+L/50)μm, (n=number of rod, L=maximum measuring length (mm) [Inch]) Resolution: 0.0001" The combining of extension rods provides a wide measuring range Supplied with a standard caliper gauge for zero setting Diameter of extension rods: φ15.5mm Nice fitted case Broad measuring capacity: 2-20" range with precision 0.001" increments for comprehensive internal sizing. Extension rod variety: Includes 0.5", 1", 2" (2pcs), 4", 8" rods, ensuring flexibility across a wide range of applications. Consistent 0.61" rod diameter: Compatible with diverse bore sizes, essential for precision machining and manufacturing. Rods labeled with ranges: Streamlines tool selection, enhancing efficiency and accuracy in measurement setups. Standard caliper gauge for zero setting included, alongside a durable fitted case for organization and protection.

The Accusize Industrial Tools 2-20'' Inside Micrometers Set, model 3011-4051, stands as a testament to precision engineering, designed to cater to the demanding requirements of professional machinists, fabricators, and engineers. This meticulously crafted tool set offers an extensive measuring range of 2-20 inches, complemented by a resolution of 0.001 inches, making it ideal for achieving accurate internal measurements in a variety of professional settings.

Equipped with a selection of extension rods (0.5", 1", 2" (2pcs), 4", 8"), this micrometer set is uniquely capable of adapting to different measurement depths and applications, ensuring that users have the right tool for any task. The uniform rod diameter of 0.61 inches further enhances its versatility, allowing for precise measurements in a multitude of bore sizes.

To facilitate ease of use and minimize the potential for errors, each interchangeable rod is clearly marked with its measuring range. This thoughtful detail, combined with the inclusion of a standard caliper gauge for accurate zero setting, underscores the set's commitment to precision and reliability.

Housed in a robust and nicely fitted case, the Accusize Industrial Tools Inside Micrometers Set is protected against the rigors of the workshop environment, ensuring that these precision instruments remain in top condition for years to come. This set not only embodies the technical precision required for specialized internal measurements but also reflects the professional standards expected by its users, making it an invaluable addition to any toolkit where accuracy is paramount.