Calibration Quotation


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NIST Traceable Calibration of Hardness Testers

Hardness Testers

Almost every manufacturer has a hardness tester, and that is where Precision Labs has spent the last decade and a half developing the array of standards to check the accuracy.

We can calibrate in direct methods or indirect methods. When we calibrate in indirect method, we utilize the finest hardness blocks available. This substantially increases the repeatability of the readings.

Since there are many different types of manufacturers, both foreign and domestic, there is no opportunity to list them, but be assured that we have the knowledge, expertise, and capability for each type that you may have.

Naturally, we offer onsite calibration of the units that cannot be sent to our facilities.


Examples of Standards
  • Hrc (Rockwell C)
  • HrA (Rockwell A) with steel or carbide (preferred) indenters
  • HrB (Rockwell B) with steel or carbide (preferred) indenters
  • Type A
  • Type B
  • Type D
  • Type OO
  • Type OOO
For Rockwell hardness testers, only the following chart is given as to Precision Lab's environmental conditions:
Parameter Tolerance Accuracy of Measurement
Temperature 23.0 +/- 3.0C
(73.4 +/- 5.4F)
Relative Humidity <=70% +/-10%

Primary NAICS of 541380 and 811219. Other Naics codes may also apply.


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644 E. Rancho Vista Blvd
Palmdale, Ca 93550 >Get Map
Phone: 661-265-6500
Fax: 661-265-6501


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