Mitutoyo 516-940-26 Metric Rectangular Gage Block Set, 1mm Base

The Mitutoyo 516-series Grade AS-2 Steel Rectangular Metric Gage Block Set includes a set of rectangular-shaped, high-carbon, high-chrome steel gage blocks with nominal length engraved in millimeters on each, and is supplied with a Mitutoyo inspection certificate that states that the blocks meet American Society of Mechanical Engineers (ASME) B89.1.9-2002 grade AS-2 standard for flatness, length, parallelism, and surface finish. The inspection certificate specifies the deviation of each individual block from its nominal length. Gage blocks are commonly used to calibrate fixtures and precision instruments in workshop, inspection, and dimensional metrology applications, to inspect tools such as mounting tools, cutters, fixtures, and mechanical parts, and in the gage manufacturing process itself.

Grade AS-2 gage blocks are commonly used in workshops for calibrating and inspecting mounting tools and cutters. High-carbon, high-chrome steel has a high hardness for minimum deterioration, and is selected for its wear-resistance. Rectangular-shaped blocks provide accurate wringing. The nominal length of each block is measured in millimeters, and is indicated with laser-etched, black characters. The length of a gage block is usually slightly shorter than its stamped nominal length, to account for the thin layer of oil or wring film used when two or more blocks are wrung together. An identification number is laser-etched on each block for traceability. The set comes with a fitted wooden case for storage.

The set includes a Mitutoyo inspection certificate [National Institute of Standards in Engineering (NIST)-traceable] that the blocks meets ASME B89.1.9-2002 standard for flatness, length, parallelism, and surface finish.