A taut cord used as a visual guide for creating straight lines, often employed in construction, landscaping, and DIY projects. This product is commonly sourced from a large home improvement retailer. For example, it can ensure accurate placement of fence posts or level rows of pavers.
Its significance lies in providing a simple yet effective method for achieving precision. The item reduces errors, saves time and materials, and contributes to a professional-looking result. Historically, variations have existed, but the principle remains the same: a stretched line as a benchmark for alignment.