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Welcome to Hahn Calibration your single source for sales and service of all makes and models of optical comparators. And digital readout and encoders for all tooling machines.

  • Vermont Precision Machine Services Inc. Products.
  • J&L Metrology Products.
  • OGP / Excello / Kodak Products.
  • Starrett and Starrett Sigma Products.
  • Gage Master / Baty Products.
  • Scherrr Tumico and Rank Precision Products.
  • Deltronic Products.
  • Bausch & Lomb Products.
  • Brown & Sharp Products.
  • Mitutoyo Products.
  • Nikon Products.
  • STI Products.
  • Micro-Vu Products.

Did you know the first optical comparator was designed in 1919 by Mr. Hartness and Mr. Porter of the Jones and Lamson Machine Company located in Springfield, VT?

Hahn Calibration can  provide you with service on the machines built in the 20's right thru today's new slide assembly and cnc models.

            A. Jones & Lamson Optical Comparators: Replace Delisted OEM SAH 250B Mercury Arc Lamp Systems
           B. Mitutoyo PH Optical Comparators: Replace Delisted OEM #201-131 Tungsten Halogen Projection Lamp            

Our Mission

To sustain a service business second to none..


Company Profile

Hahn Calibration Services: brings to you 20+ years experience satisfying customers needs both economically and on-time.


Contact Information

Postal address
Lincolnshire, IL 60069
Electronic mail
Sales and Support:

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2004 - 2016 Hahn Calibration Service
Last modified: 06/08/16