125-150mm Metric Outside Micrometer - 3203 Series (Insize)

The 125-150mm Metric Outside Micrometer – 3203 Series from Insize is a trusted precision tool designed for accurate outside-diameter measurements. With a 0.01 mm graduation and carbide measuring faces, it delivers dependable, long-lasting performance in metalworking, manufacturing, and quality-control tasks. The 3203 series is known as one of Insize's best-selling micrometers, offering a reliable balance of accuracy and durability for everyday workshop use.

Ideal for engineers, machinists, inspectors, and serious hobbyists, this micrometer covers typical 125–150 mm measuring ranges while remaining robust enough for frequent shop use. Supplied with setting standards (except 0-25mm), it helps you get to reliable readings quickly and repeatably, every time. The overall range in the series extends to sizes up to 300 mm, providing flexibility for a broad range of parts.

• 0.01 mm graduation: Clear, easy-to-read increments let you capture precise measurements quickly, reducing guesswork and rework in everyday part checks.
• Carbide measuring faces: Hard-wearing surfaces resist wear from metal parts and repeated use, delivering longer tool life and stable accuracy over time.
• Includes setting standards (except 0-25 mm): Speeds up setup and ensures repeatable measurements across jobs, helping you maintain consistency in quality checks.

With its precise graduation, durable construction, and ready-to-use standards, the 3203 Outside Micrometer helps you streamline measurement workflows, cut setup time, and deliver reliable results with confidence. Built to endure the demands of a busy shop, it supports quick checks on parts and assemblies, supports batch QA, and reduces downtime by limiting guesswork. Whether you’re calibrating fixtures, inspecting machined components, or validating finished parts, this micrometer provides dependable performance when you need it most.