A global distributor of precision measurement tools
  • Product Code: #12-535-1

    Standard Test Blocks

    Range/Size: 20-30RC

    Graduation: See Specs Below

    Price: $36.30 $35.94
    Lowest Price Guaranteed

    Product Description

    12-535-1 Standard Test Block: 20-30RC

    The 12-535-1 has approximate sizes of: 1-1/2" L x 2-1/2 W x 1/2" H.


    • Standard test blocks provide an easy means of checking your tester's accuracy.
    • Periodic testing on a regular basis is recommended.
    • Comparing a test reading of the block with the hardness number on the test block will indicate whether or not the instrument needs attention.
    • A surface rating of less than 5 micro-inches (CLA), indocates that both test and supporting surfaces are flat and parallel prior to being calibrated.
    • Order the hardness range and scale which is approximately the same as the work you will be testing.
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