Spi 10-732-6 Mechanical Hole Micrometer 1.2 Inch Range

Product Description

The SPI 10-732-6 is a mechanical hole micrometer designed to measure internal bore diameters with high precision. It covers a range up to 1.2 inches, with a graduation of 0.0002 inches and an accuracy of 0.0002 inches, making it suitable for tight-tolerance inspection work. The ratchet stop thimble provides consistent measuring pressure, reducing operator-to-operator variation. Measuring faces are solid carbide for durability and wear resistance. This instrument is self-aligning and self-centering, which speeds up setup and improves repeatability in production or service environments. It is used by machinists, metrology technicians, and precision service professionals.

The SPI 10-732-6 is suited for internal diameter measurement in precision machining, engine rebuilding, and dimensional inspection applications. It accommodates bore gauging tasks requiring a 1.2 inch maximum measurement range. The three-contact-point design provides stable, repeatable seating inside cylindrical bores. The gage depth reaches 3.15 inches, and the maximum extension rod length is 6 inches, giving it reach for deeper bore measurements when extension rods are used.

Key Features

• Measurement range up to 1.2 inches with 0.0002 inch graduation
• Accuracy of 0.0002 inches for tight-tolerance inspection
• Ratchet stop thimble ensures consistent measuring force
• Solid carbide measuring anvils for long-term wear resistance
• Self-aligning and self-centering three-contact-point design
• Gage depth of 3.15 inches with maximum extension rod length of 6 inches

Compatibility

Designed as a direct-use mechanical hole micrometer for internal bore measurement tasks requiring a range up to 1.2 inches. Compatible with standard micrometer extension rod systems with a maximum rod length of 6 inches.

Installation Notes

Hole micrometers are installed and used by machinists and metrology technicians. Before measuring, verify the instrument is zeroed against the included or appropriate setting ring standard. Handle carbide anvils carefully to avoid chipping against hard surfaces. Store in the provided case when not in use to protect the measuring faces and thimble mechanism.