3-4" Imperial Outside Micrometer - 3203 Series (Insize)

The 3-4" Imperial Outside Micrometer from Insize is a reliable, precision tool designed for measuring external dimensions in the 3 to 4 inch range. It’s well suited for machinists, inspectors, and hobbyists who need quick, repeatable readings to verify parts and setups in everyday shop workflows.

With a 0.0001 inch graduation and carbide measuring faces, this micrometer provides accurate results while resisting wear from routine use on harder materials. It’s part of Insize’s best-selling 3203 Series and comes with setting standards (except for the 0-1" range) to speed up precise zeroing and repeatable measurements right out of the box.

• 0.0001 inch graduation for precise readings: Delivers fine, repeatable measurements essential for tight tolerances and quality checks in production or maintenance settings.
• Carbide measuring faces for longer life: Hardened carbide resists wear from frequent use, helping maintain accuracy and extend tool life in busy workshop environments.
• Includes setting standards for fast setup (except 0-1"): Enables quick, repeatable zeroing and consistent results, reducing setup time and minimizing measurement drift across jobs.

This micrometer helps you streamline measurement tasks, improve consistency across parts, and reduce downtime due to tooling wear or setup variability. Built for dependable performance, it supports accurate outside measurements with confidence, day after day.