200-225mm 7.87-8.86" Three Point Internal Bore Micrometer - 3227 Series (Insize)

The Insize 3227 Series Internal 3-Point Bore Micrometer is a precision tool designed for accurate inside-diameter measurements across the 200–225 mm range. Its three-point contact inside the bore provides stable, repeatable readings, making it suitable for engineers, machinists, technicians, and hobbyists who need dependable inner dimensions.

Built for durability, this micrometer features carbide measuring faces for wear resistance and a ratchet stop to ensure consistent pressure during measurement. It arrives ready to use with extension rods and two sets of interchangeable jaws to cover different measuring ranges, plus an optional setting ring (6312) for quick, repeatable setup.

• Three‑point bore contact: Delivers stable, repeatable measurements by evenly distributing contact inside the bore for consistent results across the 200–225 mm range.
• Carbide measuring faces: Provide exceptional wear resistance, helping maintain accuracy and extend tool life in daily workshop use.
• Interchangeable jaws and extension rods: Two jaw sets plus included extension rods adapt to varying bore sizes and depths; the optional setting ring (6312) enables fast, repeatable calibration.

Designed to improve workflow and confidence on the shop floor, the 3227 bore micrometer delivers reliable performance with straightforward setup. Its robust construction and versatile jaw options help you complete inner-diameter checks quickly, reduce rework, and maintain tight tolerances across demanding applications.