Exact Calibration specializes in aftermarket calibration & certification services for the Hexagon M.I./ formerly Hexagon Metrology Leitz and Brown&Sharpe and DEA Coordinate Measuring Machine (CMM) brand.

We also offer CMM repair services, when needed, to meet the OEM specifications. Maintenance contracts are also available.

In order to achieve the highest accuracy of your system and maximize its productivity, we highly recommend that your Coordinate Measuring Machine should only be serviced by factory/OEM trained engineers with years of CMM calibration experience and full understanding of the Six Degrees of Freedom.


CMM Calibrations are offered to the OEM and national/international Quality Standards:

  • ISO/IEC 17025
  • ISO 10360
  • ASME B89 4.1
  • VDI/VDE 2617

All calibrations and certifications of your Company’s CMM include a full calibration report on work performed, incl. before & after correction results, if requested.

Calibrations/Certifications performed in accordance with industry standards, with NIST/NPL traceable calibration/confirmation certificate. Calibration equipment utilized for CMM calibrations is of the highest quality, with extremely low measurement uncertainties:

  • Kolb and Baumann (KOBA) Germany ultra high precision Step Gages
  • Agilent USA Laser Interferometers
  • Wyler Switzerland Ultra High Precision Levels

Don’t just assume you are always getting a guaranteed highly qualified technician, even if the OEM is currently servicing your CMM. Familiarize yourself with CMM calibrations and the standards and test the technicians knowledge.

Ask your service technician detailed questions about the standards used, measurement uncertainty, calibration equipment history (stability) etc. Can your current technician adjust pitch, yaw, roll (error mapping), during the calibration process (Six Degrees of Freedom)? What about correct temperature monitoring, which can critically affect the calibration results?

We always optimize the CMM accuracy during the calibration process and usually achieve better results, compared to prior CMM calibrations, including OEM calibrations.

To see some actual customer testimonials from 2002-2018, please visit  About Us

If you are not too familiar with CMM calibrations and the standards, we would be more than happy to answer any questions you might have.  Contact Us

CMM Calibration Examples – Before Adjustment 

Example – Before Correction: Measured on 1000mm KOBA step gage, steps measured at 40mm increments. Range between upper and lower green Lines indicates maximum OEM allowed tolerance range (in microns),center line indicates absolute 0 deviation. Maximum allowed tolerance range is 0.9+L/500 (+/- 2.9 microns at distance of 1000mm). Red dots show the measured positions on the step gage, points lie within +1.5 microns and -1.2 microns, some of the measured positions exceed the maximum allowed tolerance.

CMM Calibration Examples – After Adjustment 

Example – After Correction: Verified on 1000mm step gage now at 20mm increments to include possible Probehead offset error. All points lie within +0.30 microns and -0.15 microns. Our service engineer was able to adjust the CMM geometry to utilize less than
25% of the maximum OEM allowed tolerance.

2001-2018 Exact Calibration Inc. All rights reserved. Exact Calibration is NOT an affiliate of the HxGN™/Hexagon Manufacturing
Intelligence™/Hexagon Metrology™ Group. Brown & Sharpe, Leitz, DEA, PC-DMIS and Quindos names and logos are trademarks
or registered trademarks of their respective holders