Precision meets durability with SPI's steel parallels, designed for exacting measurement and inspection tasks. This matched pair of steel parallels measures 12" long x 1-1/4" high x 3/4" thick, offering exceptional stability for your setup needs. Engineered with tight tolerances, these parallels feature impressive parallelism specifications of 0.0003" and 0.002", ensuring consistent and accurate results for your dimensional measurement applications. The robust steel construction provides excellent wear resistance and dimensional stability over time, making these parallels ideal for machine shops, quality control departments, and precision manufacturing environments. These versatile tools are essential for layout work, inspection procedures, and machine setup operations where maintaining precise parallel surfaces is critical. Each pair is carefully matched to deliver consistent performance across your most demanding measurement tasks.