Mitutoyo 614202-531 2in Grade 0 Square Steel Gage Block

This is a new Mitutoyo 614202-531 individual square steel gage block measuring exactly 2 inches, manufactured to Grade 0 accuracy per ASME B89.1.9 and equivalent standards. Grade 0 is a laboratory/inspection-grade block with tighter tolerances than Grade AS-1 or Grade K, making it suitable for calibration of measuring instruments, inspection room use, and high-precision setup work where traceability is required. The block is constructed from hardened alloy steel with lapped and polished measuring faces that are flat and parallel to within Grade 0 tolerances; the characteristic through-hole visible in the photos is standard for blocks of this size class, enabling secure handling and wringing. Each block ships with a Certificate of Inspection confirming dimensional compliance, providing the documentation chain required for ISO 9001 and AS9100 quality systems. Mitutoyo serial number 24598 is visible on the block face, and the measuring faces show the dark oxidation patina typical of properly stored, unused steel gage blocks.

Product Specifications