Spi 30-739-7 Radius Gage 11/32 Inch Leaf

Product Description

The SPI 30-739-7 is a single-leaf radius gage designed to measure both convex and concave radii at 11/32 inch (0.34375 inches). Built from steel with a satin chrome finish, this gage gives machinists, pipefitters, and precision tradespeople a fast, direct way to verify fillet radii, rounded edges, and curved workpiece profiles. The leaf measures with an accuracy of 0.0012 inches, making it suitable for quality checks on machined parts, pipe fittings, and fabricated components where radius conformance matters. The satin chrome finish reduces glare and resists surface corrosion under shop conditions. At 0.03 pounds, the gage is light enough to carry in a tool apron or parts kit.

This radius gage is used in machine shops, fabrication facilities, and mechanical service environments where confirming a specific radius is part of inspection or fitment work. A single leaf covering both convex and concave profiles at the 11/32 inch size makes it a direct-check tool for parts that must meet a defined radius specification. It is appropriate for use in HVAC equipment fabrication, pipefitting, and general mechanical trade inspection wherever curved surfaces are involved.

Key Features

• Measures both convex and concave radii with a single leaf — no need for two separate gages
• Radius size: 11/32 inch (0.34375 inches maximum radius)
• Accuracy of 0.0012 inches for reliable go/no-go inspection
• Steel construction with satin chrome finish for durability and reduced glare
• Lightweight at 0.03 pounds — practical for field or bench use

Compatibility

Designed for use as a hand inspection tool wherever a 11/32 inch convex or concave radius must be verified on machined, fabricated, or fitted components.

Installation Notes

No installation is required for this hand-held inspection tool. Clean the workpiece surface before measuring to prevent debris from affecting gage contact and reading accuracy. Store the leaf gage flat and protected from impact to preserve the ground edges that determine measurement accuracy. Inspection should be performed by a qualified tradesperson familiar with radius gage technique.