Precision meets reliability with the SPI 19 mm Diameter Chrome Steel Gage Ball. Manufactured to Grade 25 Accuracy standards, this high-quality dimensional measurement tool is essential for calibration, layout, and machine setup applications. The chrome steel construction ensures durability and consistent performance in various measurement scenarios. With its precise 19 mm diameter, this gage ball provides the accuracy needed for critical dimensional inspections and comparisons. Part #14-829-6 from SPI's trusted line of measurement tools delivers the exacting standards professionals demand. Whether you're calibrating measuring equipment, checking radius dimensions, or performing complex layout work, this chrome steel gage ball offers the dependable reference standard required for precision work in manufacturing, quality control, and metrology applications.