Precision meets durability with SPI's 12" Long x 1" High x 3/4" Thick Steel Parallels. This matched pair features exceptional parallelism tolerances of 0.0003" and 0.002", ensuring accurate and consistent measurements for your most demanding machining and inspection tasks. Crafted from high-quality steel, these parallels provide the stability and reliability needed for precise workpiece positioning, layout work, and setup applications. The substantial dimensions offer versatility across various projects while maintaining the exacting standards that professional machinists require. These parallels come as a matched set, allowing for perfect alignment when working with paired surfaces. Ideal for toolrooms, quality control departments, and precision manufacturing environments where dimensional accuracy is critical to success.