Precision meets durability with these SPI Steel Parallels, designed for exacting measurement and inspection tasks. This matched pair features impressive dimensions of 9" long, 1" high, and 3/4" thick, providing ample surface area for stable workpiece support. Engineered with exceptional parallelism tolerances of 0.0003" and 0.002", these parallels deliver the accuracy required for critical machining setups and quality control inspections. The robust steel construction ensures longevity even under demanding workshop conditions. Perfect for calibration, layout work, and machine setup applications, these parallels maintain consistent height across their entire length. The matched pair design allows for versatile positioning options when supporting workpieces of various sizes and configurations. These professional-grade parallels are an essential addition to any precision measurement toolkit.