Spi 13-265-4 Combination Square Set 12 Inch 3 Piece

Product Description

The SPI 13-265-4 is a 3-piece combination square set built for layout, inspection, and measurement work in trade and industrial environments. The set includes a 12-inch hardened steel blade and cast iron heads — a square head and a center head — providing versatile reference angles for scribing, checking squareness, and locating center points on round stock. The blade is graduated in the 4R style, offering four graduation scales: 1/16, 1/32, 1/64, and 1/8 inch. At 3.2 pounds, the set is solid and stable during use. Machinists, pipefitters, fabricators, and skilled tradespeople rely on combination square sets like this for accurate layout work.

This combination square set is suited for residential and commercial trade applications wherever precise linear and angular measurement is required. Common uses include scribing parallel lines, checking 90-degree and 45-degree angles, finding the center of cylindrical workpieces, and depth measurement. The cast iron heads resist wear and maintain accurate contact with the blade channel over extended use. The set is appropriate for shop environments, job site fabrication, and mechanical rooms where layout tools see regular use.

Key Features

• 3-piece set includes 12-inch hardened steel blade, square head, and center head
• 4R graduation style: 1/64, 1/32, 1/16, and 1/8 inch scales on a single blade
• Cast iron heads for durability and consistent blade-to-head fit
• Hardened steel blade resists flex and wear under repeated use
• Center head allows quick, accurate centerline location on round or square stock
• Compact package — 1 set per package, minimum order quantity of 1

Compatibility

Designed as a general-purpose combination square set compatible with standard 12-inch blade layout tool systems. No specific model or system exclusivity is stated by the manufacturer for this set.

Installation Notes

Combination square sets are non-powered layout and inspection tools that require no installation. Before use, verify the blade is fully seated and the locking nut is tightened securely against the head to prevent blade shift during measurement. Clean the blade channel and mating surfaces periodically to maintain accurate head-to-blade registration. Store in a protective case or designated tool storage to prevent damage to graduated surfaces.