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                        Gage Block Calibration

The ORNL Metrology Laboratory maintains a wide range of dimensional calibration and inspection capabilities.  The ORNL Metrology Laboratory provides NVLAP-accredited calibrations for micrometers and calipers (up to 12 inches). The ORNL Metrology Laboratory can also provide a wide range of non-accredited, but fully-NIST-traceable calibrations and inspection services for the following:

  • Gage Blocks up to 4 inches
  • Vision Measuring Machine inspections
  • CMM Inspections
  • Roundness
  • Surface Finish
  • Optical Comparator Inspections
  • Length using Mahr-Federal Length Measuring Machine
  • Micrometers (NVLAP-Accredited)
  • Calipers (NVLAP-Accredited)
  • Height Gages
  • Metal Scales
  • Hardness

The tables below list our accredited capabilities. Our entire Scope of Accreditation can be found at the following link.

If you have questions about our dimensional and inspection capabilities, please contact the ORNL Metrology Laboratory for additional information.

NVLAP Code: 20/D05
Micrometers (0 to 12 inches)

Resolution

Best Uncertainty

Remarks

0.00005 inch

43 µ inches

comparison to gage blocks

0.0001 inch

84 µ inches

comparison to gage blocks

0.001 inch

820 µ inches

comparison to gage blocks

Calipers (0 to 12 inches)

Resolution

Best Uncertainty

Remarks

0.0005 inch

410 µ inches

comparison to gage blocks

0.001 inch

820 µ inches

comparison to gage blocks

Any reference to "accredited" or "accreditation" refers to the National Voluntary Laboratory Accreditation Program (NVLAP) and applies to calibration services only as performed by the Oak Ridge National Laboratory's (ORNL) Metrology Laboratory (Lab Code 200159-0). Refer to the ORNL NVLAP scope of accreditation for details.

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