Calibration Blocks | McMaster-Carr

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Accuracy Certificate Traceable to NIST

Calibration Certificate Traceable to NIST

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765 Products

Measuring and Inspecting

Gauge Blocks

Confirm dies, fixtures, and other workpieces meet precise tolerances and calibrate measuring tools

Calibration Squares

Calibration Squares

Lay horizontally or vertically on CNC machines to check the position of tools with high precision

Bore Gauge Calibrators

Bore Gauge Calibrators

Set and check the accuracy of two-point bore gauges

Hardness Calibration Test Blocks

Hardness Calibration Test Blocks

Confirm testers are accurate for a specific Rockwell or Brinell hardness

Hardness Testers

Hardness Testers

Determine the Rockwell, Brinell, or Durometer hardness of any material

Color Calibrators

Color Calibrators

Calibrate your color meter to identify colors with precision

Fabricating and Machining

Setup Blocks

Use as mounting bases and supports to ensure accurate angles and spacing

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)