McMaster-Carr logo
    Filter by
    System of Measurement
    Manufacturer
    Gauge Block Grade
    Material
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Width
    Length
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    1 Product

    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.
    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
    24.5-0.00014 to 0.00014359MitutoyoSteelASME B89.1.92233A918000000
    Mitutoyo Gauge Block, Rectangle, Grade 0, 24.5 mm Size, Steel
    EachIn stock
     
    back to top