Spi 12-497-4 Square Set 4 Piece Hardened Steel

Product Description

The SPI 12-497-4 is a 4-piece square set designed for precision layout, inspection, and measurement tasks in trade and industrial settings. The set includes three beveled squares and a triangular straight edge, all constructed from hardened and ground steel for long-term dimensional accuracy. Base lengths in the set measure 3/4 inches, 1-1/8 inches, and 1-15/16 inches. Corresponding blade lengths are 1 inch, 1-1/2 inches, 1-9/16 inches, and 2-15/16 inches. The hardened and ground finish on all straight-edge sides ensures consistent reference surfaces for scribing and squaring work across a range of part sizes.

This square set is suited for machinists, tool-and-die workers, pipefitters, and precision fabricators who require reliable small-scale reference tools at the bench or in the field. The range of base and blade lengths makes the set versatile for checking squareness on small components, layout work on flat stock, and verifying angles during fitting and assembly operations. The included case keeps all four pieces organized and protected during storage and transport.

Key Features

• Hardened and ground steel construction for accurate, repeatable reference surfaces
• Straight-edge sides on all pieces for clean scribing and squaring
• Includes 3 beveled squares covering multiple base and blade length combinations
• Triangular straight edge included as a fourth layout reference tool
• Protective case included for organized storage of all 4 pieces

Compatibility

Designed as a general-purpose precision layout and inspection square set suitable for bench use in machining, fabrication, and mechanical trade applications.

Installation Notes

No power source or mechanical installation is required for this hand tool set. Keep reference surfaces clean and free of burrs or debris before use to maintain measurement accuracy. Store pieces in the provided case when not in use to protect ground surfaces from damage. Calibration should be verified periodically against a known reference standard in critical inspection applications.