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The Milwaukee Electric Tool Corp 4003 is a 36-inch straight edge designed for layout, marking, and alignment tasks on the job site. Built for trade professionals who need a reliable reference tool across carpentry, electrical, plumbing, and HVAC installation work, this straight edge delivers consistent accuracy for scribing lines, checking flatness, and guiding cuts. At 7.9 pounds, it has enough mass to stay in place during use without being unwieldy. Tradespeople working on large panel layouts, duct runs, or rough framing will find the 36-inch working length covers common measurement spans in a single pass.
This straight edge is suited for residential and light commercial job sites wherever layout accuracy matters. Typical applications include marking cut lines on sheet goods, verifying surface flatness during installation, and transferring measurements across panels or substrates. The 36-inch length is well matched to standard material widths encountered in HVAC sheet metal work, electrical panel rough-in, and general construction layout tasks.
Designed as a general-purpose straight edge suitable for layout and alignment tasks across carpentry, HVAC, plumbing, and electrical trade applications.
No installation is required for this layout tool. Keep the working edge free of nicks and burrs to maintain accuracy. Store flat or hang vertically to prevent warping over time. Inspect the straight edge periodically against a known reference surface to confirm it has not been bent or damaged.
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