225-250mm 8.86-9.84" Three Point Internal Bore Micrometer - 3227 Series (Insize)

The Insize 3227 Series Three-Point Internal Bore Micrometer is built for precise internal measurements in holes and bores. Designed for a 225–250 mm (8.86–9.84") range, this tool uses a three-point contact setup to minimize bore distortion and deliver repeatable readings. Its carbide measuring faces and ratchet stop enhance durability and control, making it a reliable choice for everyday workshop and production environments.

• Two interchangeable jaws for different measuring ranges: Quickly switch between jaw sets to cover multiple bore sizes without replacing the instrument, boosting setup speed and maintaining accuracy across the 225–250 mm range and beyond.
• Carbide faces with ratchet stop for durability and repeatable readings: Carbide measuring faces resist wear for long life, while the ratchet stop provides consistent contact pressure to prevent over-tightening and ensure reliable measurements every time.
• Extension rods included with optional setting ring: Comes with extension rods for deeper bores and an optional setting ring (code 6312) to pre-set measurements, helping you speed up workflows and reduce setup errors.

This bore micrometer is designed to deliver clear, dependable results in manufacturing, engineering, and maintenance tasks. With a focus on durability, ease of use, and repeatable performance, it supports accurate bore checks, quick setups, and confidence in every measurement.