Spi 30-741-3 Radius Gage 13/32 Inch Leaf

Product Description

The SPI 30-741-3 is a 13/32-inch radius gage designed for measuring both convex and concave radii on a single leaf. Built from steel with a satin chrome finish, this gage gives machinists, fabricators, and tool-and-die technicians a fast, reliable way to verify fillet and corner radii on workpieces. Accuracy is rated at 0.0012 inches, making it suitable for close-tolerance inspection tasks in production and maintenance environments. The leaf-style design allows for quick profile matching without requiring additional measurement tools or setups.

This radius gage leaf is used in metalworking, fabrication, and machine shop environments where confirming the radius of a curved surface is part of the workflow. It is well suited for checking tooling, castings, stampings, and machined parts during in-process or final inspection. The single-leaf format makes it easy to carry and store as a standalone reference gage or as part of a broader radius gage set.

Key Features

• Measures 13/32-inch radius with a maximum radius of 0.41 inches
• Convex and concave radii measurement on each leaf — one tool, two profile types
• Accuracy rated at 0.0012 inches for close-tolerance verification
• Steel construction with satin chrome finish for durability and corrosion resistance
• Compact single-leaf design for easy handling and storage

Compatibility

Designed as a standard leaf-style radius gage for general metalworking and inspection use. Compatible with common radius gage sets and holders that accept individual replacement leaves.

Installation Notes

Radius gages require no installation. To use, hold the leaf against the curved surface of the workpiece and check for light gap or flush contact. Clean the gage and workpiece surface before inspection to prevent false readings. Store the leaf in a dry location away from abrasive materials to preserve the finish and accuracy.