PTC Instruments
PTC® Instruments / PTC Metrology™
The leading manufacturer of Durometers and Surface Thermometers in the world. Our factory and calibration lab is located in Los Angeles, California where PTC® has been manufacturing quality test instruments since 1946.

PTC Metrology™ Calibration Lab is accredited by A2LA to ISO/IEC/17025 ANSI/NCSL Z540-1 Certificate number 1896.01 To send your instruments for calibration and/or written certification, please click the following link and fill out the RMA (Return Materials Authorization) form. PTC Metrology™ has qualified technicians with 25 plus years of experience in hardness (durometers) and temperature calibration.

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Phone: 310.478.1134 | email:

Dunns: 00-837-4530 | Cage Code: 96739

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