Spi 13-361-1 Combination Square Set 24 Inches 2 Piece

Product Description

The SPI 13-361-1 is a 2-piece combination square set built for layout, measurement, and inspection work across trade and industrial applications. The set includes a 24-inch hardened steel blade and a hardened steel square head, delivering durability under frequent jobsite use. Graduation markings run in both English and metric scales, with increments as fine as 0.02 inches and 0.5 mm, making this set suitable for precision layout tasks. Machinists, pipefitters, millwrights, and general tradespeople use combination squares for scribing lines, checking squareness, and measuring depth or height with a single tool.

This combination square set is well suited for residential and commercial construction, mechanical shops, fabrication floors, and maintenance facilities. The 24-inch blade length accommodates larger workpieces and longer layout lines than standard 12-inch sets. The square head allows 90-degree and 45-degree reference checks directly off the blade. Any tradesperson working with steel, wood, or composite materials who needs reliable English and metric measurement on a single blade will find this set fits standard layout workflows.

Key Features

• 24-inch hardened steel blade resists wear and flex during repeated layout use
• Hardened steel square head provides stable 90-degree and 45-degree reference surfaces
• Dual English and metric graduation for versatile measurement without swapping tools
• Fine graduation increments of 0.02 inches and 0.5 mm for precise scribing and layout
• 2-piece set covers common combination square tasks in a single package

Compatibility

Designed as a general-purpose combination square set for trade and industrial layout applications where a 24-inch hardened steel blade with English and metric graduation is required.

Installation Notes

Combination squares require no installation but should be inspected for blade straightness and head locking mechanism function before use. Store the blade protected from impact to maintain graduation accuracy. When using near electrical panels or energized equipment, confirm power is isolated before performing layout work in confined spaces. Periodic cleaning of the blade channel and locking screw ensures consistent head clamping and measurement repeatability.