Achieve precision measurements with the SPI Rectangle Steel Gage Block (0.17", Grade 0). This high-quality dimensional measurement tool comes with NIST Certification, ensuring accuracy and reliability for your most demanding calibration needs. Manufactured by MSC Industrial under the trusted SPI brand, this rectangular steel gage block (part #14-991-4) is crafted to exacting standards for consistent performance in professional settings. The Grade 0 classification indicates superior dimensional stability and surface finish, making it ideal for calibrating measuring instruments, setting up machinery, or performing quality control inspections. Perfect for manufacturing facilities, tool rooms, and quality labs where precision is paramount. This durable steel construction ensures longevity even with regular use, while the rectangular shape provides excellent handling characteristics during setup and measurement procedures.