Fowler 52-370-012-0 Combination Square Set 12 Inch 4 Piece

Product Description

The FOWLER 52-370-012-0 is a 4-piece combination square set built for layout, inspection, and measurement work in trade and shop environments. The set includes a 12-inch steel blade graduated in 4R style, meaning it carries four graduation scales: 1/64, 1/32, 1/16, and 1/8 inch on the inch side, with metric equivalents of 0.02, 0.03, 0.06, and 0.13 inch. The square head is made from hardened steel for durability under repeated use. This tool is suited for machinists, pipefitters, carpenters, and general tradespeople who need a reliable layout square for scribing lines, checking 90-degree angles, and measuring depth or height.

The FOWLER 52-370-012-0 is used across residential and commercial job sites, fabrication shops, and mechanical trade environments. It is a standard layout tool for checking squareness on framed assemblies, verifying machined surfaces, and scribing cut lines on metal or wood stock. The 4R graduation style makes it compatible with both fractional and fine-increment measurement tasks without requiring a separate rule. Tradespeople working in sheet metal, HVAC fabrication, plumbing rough-in, or general mechanical assembly will find the multi-scale blade useful in daily layout work.

Key Features

• 12-inch steel blade with 4R graduation in four scales: 1/64, 1/32, 1/16, and 1/8 inch
• Hardened steel square head resists wear and maintains accurate 90-degree reference
• Four-piece set provides a complete layout and measurement solution in one package
• Metric graduation equivalents of 0.02, 0.03, 0.06, and 0.13 inch for dual-system use
• Steel blade construction handles repeated use in shop and field conditions

Compatibility

Designed as a standard 12-inch combination square set compatible with typical layout and inspection tasks across machining, fabrication, and general trade applications.

Installation Notes

No installation is required for this tool. Handle the hardened steel components carefully to avoid drops that could affect squareness accuracy. Periodically verify the head-to-blade registration against a known flat reference surface. Store the set in a clean, dry location to prevent rust or corrosion on the steel blade.