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  • ACCREDITED ISO 17025
  • CALIBRATION LAB
  • THERMOMETERS
  • DUROMETERS
  • DATA LOGGERS
  • MORE PTC® INSTRUMENTS
  • PTC® TRAINING HANDCUFFS

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Monday - Friday
6 am to 2:30 pm PST
310.478.1134 [email protected]

National Institute of 
Standards and Technology
PTC Metrology™ offers NIST Traceable calibration and certification services.
Take a look at our Portable Steel Hardness Tester

The Portable Steel Hardness Tester measures the hardness of metals in the range of 20 to 65 HRC on the equivalent Rockwell C Scale. The instrument is fully portable and easy to use. It can easily be carried anywhere an accurate hardness test is required.
PTC® thermometers are handmade of quality materials in our Los Angeles factory and used worldwide. Every thermometer we make is calibrated by qualified technicians.



  1. Home
  2. Temperature Ranges Fahrenheit
  3. -30° to 70°F

-30° to 70°F

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PTC® Instruments / PTC Metrology™
2301 Federal Avenue
Los Angeles, CA 90064

PTC METROLOGY™ is Accredited by A2LA to ISO/IEC/17025:2017
Certificate number 1896.01



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