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The JOHNSON LEVEL TOOL JTS48HD is a 48-inch heavy-duty aluminum drywall square built for layout and marking work on large sheet goods. The blade and head are both extruded aluminum at 3/16-inch thickness, giving the tool rigidity without excessive weight. A unique rivet assembly permanently bonds the head to the blade, keeping the square true for the life of the tool. A clear protective anodized finish resists corrosion on the job site. Screened, thermal-bonded black graduations at 1/8-inch intervals are large and bold for fast, accurate readings under typical site lighting conditions. Drywall hangers, finish carpenters, and framing crews will find this tool suited to high-volume production work.
The JTS48HD is designed for use on residential and light commercial job sites where full-sheet drywall layout, scribing, and straight-line cutting are routine tasks. The 48-inch blade length spans the full width of a standard drywall sheet, allowing a single-pass mark from edge to edge. It is equally useful for marking plywood, fiber cement board, and other sheet goods. The permanent head-to-blade bond is especially valuable in production drywall environments where tools take repeated handling and impact.
Designed as a general-purpose layout square for use with standard 48-inch-wide sheet goods including drywall, plywood, and similar panel materials.
No power source or mechanical installation is required for this hand tool. Always verify square calibration before use by checking the head-to-blade angle against a known reference. Keep the anodized surface clean and free of debris to maintain accurate blade contact with sheet material. Handle and store the square to avoid bending the blade, which can compromise accuracy.
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