12-16mm 0.47-0.63" Three Point Internal Bore Micrometer - 3227 Series (Insize)

The Insize 3227 Series Three Point Internal Bore Micrometer is a precision tool designed for accurate internal bore measurements in 12–16 mm applications. Its three-point contact system evenly engages the bore, delivering repeatable readings across multiple checks for components such as cylinders, gears, or housings.

With carbide measuring faces for exceptional wear resistance and a built-in ratchet stop, this micrometer provides consistent measuring force and long service life. It also includes a setting ring to help you establish and reproduce reference measurements quickly and reliably.

• Three-Point Contact Design: Ensures stable, repeatable readings by minimizing eccentricity and grip variation when measuring bores, improving accuracy across repeated checks.
• Carbide Measuring Faces: Deliver superior wear resistance, maintaining precision even when measuring through hardened or frequently used bores over extended periods.
• Ratchet Stop with Setting Ring: Provides consistent measuring pressure for repeatable results and a straightforward setup to quickly establish reference sizes.

This micrometer helps you streamline inspection, improve measurement reliability, and support quality control in both production and workshop environments. Built for durability and precision, the Insize 3227 is a trusted choice for engineers, machinists, and hobbyists who demand consistent bore verification with minimal setup.