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The STANLEY 42-287 is a compact aluminum line level designed for quick horizontal reference checks on stretched string or line. At 3.25 inches in length with a single vial, it clips directly onto a taut line to give tradespeople and builders a fast, reliable level reading without removing the line from position. The aluminum body keeps weight low at 0.04 pounds, reducing sag influence on the line. This tool is used wherever a continuous horizontal reference line is needed across a span, such as when laying out footings, setting fence posts, aligning forms, or establishing grade references.
The STANLEY 42-287 suits residential and light commercial layout work. It is a standard tool for carpenters, masons, concrete form setters, landscapers, and general contractors who need a lightweight, no-fuss level reference along a string line. Its compact 3.25-inch profile keeps it manageable on any string run.
Designed as a standard line level for use with common mason line, string line, or similar taut cordage used in layout and grading applications.
Hook or tie the level onto a taut string line at the midpoint of the span for the most accurate reading, as a loose or sagging line will produce a false level indication. No tools are required for attachment. Ensure the line is pulled to consistent tension at both anchor points before reading the vial. This level is a layout reference tool and is not intended for use on surfaces or structures.
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