Starrett Scratch Gage is invaluable for accurately scribing lines parallel to a given surface, a task commonly required in woodworking, metalworking, and other precision trades. It ensures that every line is perfectly aligned, making it a must-have for professionals who demand exactness in their work. Constructed from high-quality steel, the tool boasts exceptional strength and longevity, with the head being carefully hardened to resist wear and ensure consistent performance over time. The sturdy steel frame contributes to its overall durability, making it well-suited for demanding work environments. The gage features a secure locking mechanism, using a knurled clamp screw paired with a split bushing in the head. This ensures that the gage stays firmly in place, preventing any movement or misalignment during use, and delivering reliable, repeatable results every time. The marker, made from a thin tempered steel, is a square piece that is securely fastened against the edge of the beam by a screw, ensuring that it remains perfectly aligned for precise scribing. This construction method enhances the tool's stability, allowing for smooth, consistent marks without any risk of slippage. The beam itself is graduated over a full 6" (150mm) length, with increments in 64ths of an inch, offering detailed measurements for fine adjustments. Users can make highly precise adjustments to the tool by rotating the head slightly, allowing for optimal control and accuracy when scribing parallel lines. This level of fine-tuning provides versatility for a range of projects requiring varying degrees of precision.