Spi 13-633-3 Square Set 3 Piece Hardened Spring Steel

Product Description

The SPI 13-633-3 is a 3-piece square set designed for precision layout, inspection, and verification work in trade and industrial settings. The set includes three squares with base lengths of 2, 3, and 4 inches and corresponding blade lengths of 2, 4, and 6 inches. Constructed from hardened spring steel, these squares deliver consistent parallelism and straightness across all three sizes. The compact range of sizes makes this set practical for machinists, pipefitters, sheet metal workers, and tool and die professionals who need reliable right-angle references at multiple scales in a single kit.

This square set is suited for use in machine shops, fabrication facilities, and field service environments where confirming squareness, checking parallelism, or scribing layout lines is part of routine work. The graduated blade lengths allow the technician to select the appropriate size for the workpiece at hand, reducing the need for multiple individual tools. The hardened steel construction is appropriate for repeated contact with metal surfaces without significant wear to the reference edges.

Key Features

• 3-piece set covers base lengths of 2, 3, and 4 inches
• Blade lengths of 2, 4, and 6 inches included
• Hardened spring steel construction for durability and edge retention
• Manufactured to parallelism and straightness tolerances for precision reference work
• Compact size range suitable for benchtop and field use

Compatibility

Designed as a general-purpose precision square set for use across metal fabrication, machining, and inspection applications requiring verified right-angle and flatness references.

Installation Notes

Square sets are hand tools used for layout and inspection rather than installed components. Calibrated measuring tools should be handled carefully and stored away from impact and moisture to preserve reference-edge accuracy. Verify the squares against a known reference surface periodically to confirm continued accuracy. No power shutoff or code compliance is required for use of hand layout tools.