Starrett 56392 Combination Square Set 6 in 2 Piece 4R

Product Description

The STARRETT 56392 is a 2-piece combination square set built for layout, marking, and measurement work in the trades. The set includes a 6-inch steel blade and a forged steel square head. The blade is graduated in the 4R style, providing four graduation scales: 1/64, 1/32, 1/16, and 1/8 inch, giving the user fine-resolution readings across a single blade. The forged steel head delivers the rigidity needed for accurate 90-degree and 45-degree reference checks on material surfaces. This tool is a standard in the toolkit of electricians, pipefitters, HVAC technicians, and sheet metal workers who need reliable layout and squaring capability on the job.

The 56392 is suited for use in both residential and commercial trade applications where accurate marking, depth measurement, and squaring of materials are required. It works on metal, wood, and composite surfaces, making it practical across multiple trade disciplines. The compact 6-inch blade length is well suited for confined spaces and bench work common in mechanical and electrical rough-in tasks.

Key Features

• 2-piece set includes a 6-inch steel blade and a forged steel square head
• 4R graduation style with four scales: 1/64, 1/32, 1/16, and 1/8 inch
• Forged steel head provides durability and accurate 90-degree and 45-degree referencing
• Steel blade resists flex for consistent layout readings
• Compact 6-inch blade length suits confined-space and bench applications

Compatibility

Designed as a standard combination square set for general trade layout and measurement tasks across HVAC, electrical, plumbing, and sheet metal applications.

Installation Notes

No installation is required for this hand tool. Before use, verify the head locks securely to the blade with no perceptible play, as a loose head will produce inaccurate square references. Keep the blade clean and free of burrs to maintain graduation legibility and surface contact. Store the tool protected from impact to preserve the calibration of the head-to-blade fit.