Spi 30-224-0 Combination Square Set 12 Inch 2 Piece

Product Description

The SPI 30-224-0 is a 2-piece combination square set built for layout, marking, and angle verification work across metal fabrication, mechanical installation, and general trade applications. The set includes a 12-inch hardened steel blade and a cast iron square head. The blade is graduated in 16R style, providing four graduation increments: 1/32, 1/64, 1/50, and 1/100 inch. Hardened steel construction on the blade resists wear during repeated scribing and measuring tasks, while the cast iron head delivers dimensional stability under shop conditions. This set is well suited to HVAC, plumbing, electrical, and general mechanical trades where accurate layout work is part of daily service.

The 30-224-0 combination square set is appropriate for residential and light commercial installation and fabrication environments. Typical applications include checking 90-degree and 45-degree angles on ductwork, conduit, pipe fittings, and structural framing during installation. The 12-inch blade length accommodates most standard layout tasks without requiring a longer rule. The square head can also function as a depth gauge and miter guide, making this a versatile reference tool for techs working across multiple trade disciplines.

Key Features

• 12-inch hardened steel blade resists wear during repeated layout and scribing use
• Cast iron square head provides stable 90-degree and 45-degree reference
• 16R graduation style with 1/32, 1/64, 1/50, and 1/100 inch increments on the blade
• 2-piece set includes blade and square head
• Blade slides and locks along the head for depth and step measurements

Compatibility

Designed as a general-purpose combination square set suitable for standard layout and measurement tasks in trade and fabrication settings.

Installation Notes

Combination squares are a hand measurement and layout tool requiring no power source or mechanical installation. Store the set with the blade protected to prevent nicking the graduation markings. Periodically verify the squareness of the head against a known reference surface to confirm accuracy has not shifted due to impact or wear. Keep the blade locking mechanism clean and free of debris to maintain secure positioning during use.