SPI Standard Test Block - 12-539-3

Brand:

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SKU:
12-539-3
Hardness:
75 - 95 RC


SPI Standard Test Block

Features:

  • Standard test blocks provides 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 wheather or not the instrument needs attention
  • A surfece rating of less than 5 micro-inches (CLA), and both test and supporing surfaces 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.
  • Approximate sizes: 1-1/2"L x 2-1/2"W x 1/2"H
75-95 HRB SPI HARDNESS TEST BL