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Mitutoyo Steel Rectangular Micrometer Inspection Gage Block Set, ASME Grade 0, 0.0625 - 2.0" Length (9 Blocks)
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About Mitutoyo Steel Rectangular Micrometer Inspection
The Mitutoyo 516-934-26 gage block set includes nine ASME grade 0 steel rectangular gage blocks with nominal size engraved in inches. Blocks included in the set measure .0625", .100", .125", .200", .250", .300", .500", 1", and 2". Grade 0 gage blocks are often used for calibrating and inspecting tools, instruments, and manufacturing gages. This rectangular gage block set meets ASME B89.1.9 standards and a certificate of inspection and calibration is provided with each set. Gage blocks (also called gauge blocks, Jo blocks, Hoke blocks, and Johansson gauges) are precision ground and lapped metal or ceramic blocks, used for calibrating precision measuring equipment and as a length standard in manufacturing. Gage blocks are square or rectangular in shape, with flat and parallel measuring surfaces, and usually have an engraved unique serial number and nominal length (provided in either inches or millimeters). They often come in sets with blocks of varying lengths, so that many different standard lengths can be created by stacking and wringing them. Wringing is the process of sliding blocks together with a small amount of pressure, in order to create a longer gage block stack. Gage blocks are kept within a protective case, are cleaned thoroughly before wringing and after each use to prevent corrosion, and are kept free of burrs and other damage that would decrease their accuracy. Temperature is another important consideration. Blocks are susceptible to thermal expansion and must be used at 68 degrees F to ensure their accuracy. Gage blocks are available in different grades, which refer to their tolerance or allowable deviation from their nominal dimension. Grades are defined by the American Society of Mechanical Engineers (ASME) B89.1.9M for both length and flatness. ASME B89.1.9M also defines standards for parallelism and surface finish. Different grades are available depending on the application and the required level of accur
