Johnson Level Tool 420EM Combination Square 16 in

Product Description

The JOHNSON LEVEL TOOL 420EM is a 16-inch professional combination square designed for layout, marking, and angle verification across a range of trade and construction applications. The blade is stainless steel with permanently stamped graduations in both English and metric units, ensuring long-term readability even in harsh jobsite conditions. The head is heavy-duty cast zinc with a black, chip-resistant e-coating finish and is CNC machined for high squareness accuracy. A reversible head design with a lock bolt and steel screw allows flexible positioning. A hardened, screw-in scriber is integrated into the head and will not fall out during use. An acrylic level vial rounds out the tool for quick plumb and level checks.

This combination square is suited for residential and commercial construction, millwork, metal fabrication, and general trade layout work. It is commonly used by carpenters, pipefitters, ironworkers, and general contractors who require a reliable, dual-unit layout tool for scribing, depth measurement, and 90-degree and 45-degree reference. The 16-inch blade length makes it practical for both bench work and field use.

Key Features

• Stainless steel blade with permanently stamped English and metric graduations for lasting legibility
• CNC machined cast zinc head delivers consistent squareness accuracy
• Black chip-resistant e-coating finish protects against corrosion and jobsite wear
• Reversible head with lock bolt and steel screw for flexible blade positioning
• Hardened screw-in scriber integrated into head will not fall out during use
• Acrylic level vial provides quick plumb and level reference

Compatibility

Designed as a standard professional combination square suitable for general layout and measurement tasks across carpentry, construction, and fabrication trades.

Installation Notes

No installation is required for this hand tool. Before use, verify that the lock bolt is fully tightened to secure the head at the desired position on the blade. Keep the blade clean and dry to maintain graduation legibility and prevent corrosion. The scriber should be hand-tightened into the head receptacle before use.

Technical Specifications

• Blade Length: 16 inches
• Graduation Units: English and Metric
• Blade Material: Stainless Steel
• Head Material: Cast Zinc
• Head Finish: Black E-Coating, Chip-Resistant
• Level Vial Material: Acrylic
• Weight: 0.851 pounds
• UOM: Each

Standard Information

• Brand: JOHNSON LEVEL TOOL
• Manufacturer Part Number: 420EM