250-275mm 9.84-10.83" Three Point Internal Bore Micrometer - 3227 Series (Insize)

The Insize 3227 Series Three Point Internal Bore Micrometer is a precision tool designed to measure inside diameters with repeatable accuracy. Optimized for bore measurements in the 250–275 mm range (approximately 9.84–10.83 inches), it’s ideal for workshops, engineering labs, and manufacturing floors. The tool combines durable carbide measuring faces with a ratchet stop to deliver stable, wear-resistant performance through every measurement.

Two sets of interchangeable jaws are included, allowing you to cover multiple measuring ranges without swapping instruments. The robust design is complemented by extension rods for deeper access, and an optional setting ring (code 6312) is available to speed setup and ensure consistent reference points.

• Two interchangeable jaw sets for multiple bore ranges: Quickly adapt the micrometer to different internal diameters without tool changes, improving measurement speed and flexibility.
• Carbide measuring faces with ratchet stop for durability and repeatable readings: Built to resist wear and provide consistent applied force, reducing measurement variation over time.
• Includes extension rods and optional setting ring (6312) for fast, precise setups: Extends reach for hard-to-access bores and offers an optional accessory to streamline setup.

This bore micrometer helps you achieve reliable, repeatable internal measurements, cutting downtime from misreads and rework. With durable carbide faces and a ratchet-driven measuring action, it stays accurate longer in demanding environments. The interchangeable jaws and included extension rods give you versatile, quick setup across a range of bore sizes, while the optional setting ring (6312) supports fast, consistent zero-setting for calibrated results.