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    4 Products

    Gauge Blocks

    Image of Product. Front orientation. Gauge Blocks. Gauge Blocks, Rectangle.

    Rectangle

    Image of Attribute. Front orientation. Contains Annotated. Gauge Blocks.
    A true source of measurement, use these gauge blocks to calibrate measuring equipment, mark precise layouts, or position your fixture or machine components just right. All blocks include a certificate of compliance to certify their sizes are within tolerance. The certificate also lists when each block will require recalibration.
    Each block has a grade per ASME B89.1.9. Grades are based on tolerance—the smaller the tolerance, the greater the accuracy.
    Use a gauge block holder (not included) to create a custom repeatable measurement by stacking multiple blocks together.
    Grade 0 Gauge Block—Grade 0 gauge blocks are our most accurate. They help verify that precise measuring instruments, such as micrometers and calipers, are taking accurate readings.
    Grade AS-1 Gauge Block—Grade AS-1 gauge blocks have a slightly higher tolerance. They’re the most common grade of gauge block.
    Ceramic—Ceramic blocks are more resistant to wear and corrosion than steel blocks. They won’t expand or contract as temperatures change. Use them in cleanrooms—they’re nonmagnetic so they won’t pick up any iron or dust.
    Steel—Steel blocks are the most common choice for gauge blocks.
    Gauge Size,
    mm
    Gauge Size Tolerance,
    mm
    Lg.,
    mm
    Wd.,
    mm
    Mfr.
    Material
    Specs. Met
    Each
    Rectangle
     
    Grade 0 Gauge Block
    20-0.00014 to 0.00014359MitutoyoCeramicASME B89.1.9000000000000000
    20-0.00014 to 0.00014359MitutoyoSteelASME B89.1.9000000000000
     
    Grade AS-1 Gauge Block
    20-0.0003 to 0.0003359MitutoyoCeramicASME B89.1.900000000000000
    20-0.0003 to 0.0003359MitutoyoSteelASME B89.1.90000000000000
     
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