Johnson Level Tool 400 Combination Square 12 Inches

Product Description

The JOHNSON LEVEL TOOL 400 is a 12-inch professional combination square built for trade and layout work on jobsites and in the shop. The stainless steel blade carries permanently stamped graduations that resist wear over long-term use. The head is cast zinc with a black, chip-resistant e-coat finish and is CNC machined for accurate 90-degree and 45-degree reference. A reversible head design with a lock bolt and steel screw lets the blade be repositioned quickly without losing setup. A hardened, screw-in scriber is included and secured so it stays in place during transport and use. A durable acrylic level vial is integrated into the head for basic plumb and level checks.

This combination square is suited for layout, measurement, and marking tasks across carpentry, millwork, plumbing rough-in, electrical panel and conduit layout, and general construction trades. The 12-inch blade length covers standard stud, joist, and panel layout increments. The English graduation system makes it compatible with standard imperial measurement workflows on residential and light commercial jobsites.

Key Features

• Stainless steel blade with permanently stamped graduations for long-term legibility
• CNC machined cast zinc head for repeatable 90-degree and 45-degree accuracy
• Black chip-resistant e-coat finish on the head resists jobsite wear
• Reversible head with lock bolt and steel screw for flexible blade positioning
• Hardened screw-in scriber secured in head to prevent loss
• Integrated acrylic level vial for quick plumb and level reference

Compatibility

Designed as a standard 12-inch combination square for general layout and measurement use across multiple trades and applications.

Installation Notes

No installation is required for this hand tool. Before use, verify the head is locked securely to the blade using the lock bolt to ensure accurate readings. Keep the blade and head free of debris that could affect squareness. Periodically inspect the acrylic vial for damage if the tool is subjected to heavy impact.

Technical Specifications

• Blade Material: Stainless steel
• Head Material: Cast zinc
• Head Finish: Black chip-resistant e-coat
• Blade Length: 12 inches
• Graduation System: English (imperial)
• Weight: 0.732 pounds

Standard Information

• Brand: JOHNSON LEVEL TOOL
• Manufacturer Part Number: 400