Field/On-Site Calibration Services in Illinois, Indiana, Iowa, Missouri and Wisconsin

Are you concerned about downtime when sending equipment out for calibration?

Assurance Technologies, Inc. offers On-Site Calibration services for most equipment contained within our ISO/IEC 17025:2017 scope of accreditation. Providing on-site services for 20+ years, we understand the importance of measurement equipment and how being without it can affect day to day operations.

Assurance Technologies offers Accredited Field / Onsite calibration services in Illinois, Iowa, Indiana, Missouri, Wisconsin, Arkansas, Oklahoma and Texas. All gage history, copies of Calibration Certificate are accessible 24/7 in our Cloud based password protected portal(A-Trax). With ATI's calibration process being handled in A-Trax, the barcode calibration stickers are also linked to each unique gage ID. ATI customer can utilize a bar code scanner to access all calibration certificates & history in real time with the auditor. It eliminates the need to go back and pull records or request certificates from a calibration provider.

ATI’s key components to a successful On-Site Calibration experience:



It begins with communication. Communication is vital to On-Site Calibration and we strive to maintain it throughout the process.

  • Contact from the Internal Team to begin the process.

  • Technician communication regarding arrival time.

  • Technician communication on-site throughout the job.

  • Upon completion, follow up from Metrology Sales Engineer.

  • Survey to provide feedback.

  • Automated notification of equipment coming due for calibration 30 days prior.


While on-site you can expect expertise.

  • Appearance - Our Technicians maintain a professional appearance on-site at all times.
  • Attentive - Organized, detailed, and driven to provide quality service.
  • Integrity - Building trust and providing honest input.
  • Courtesy - We listen to your needs/concerns and provide solutions.


Providing the quality service you expect.

  • Our Technicians arrive on-site ready to go with all equipment/supplies needed to complete the job at hand.
  • Provide a quality service with minimal disruption/downtime.
  • Time management through organization, prioritization, and optimization.
  • Resolving equipment problems quickly!
  • Knowledgeable, qualified, and skilled Technicians.

Our goal is to ensure complete satisfaction with the on-site services provided. Allow our highly trained Field Service Technicians to come to your facility to handle your calibration needs! Don’t hesitate contact us today for a quote!

  • On-Site Calibration of Hand Gages, Surface Plates, Scales/Balances, CMM’s, Optical Comparators, Video Comparators, Force, Torque, Tensile Testers, Hardness testers, Pressure/Vacuum, Electronics and many more types of equipment!
  • Calibration Certificates available 24/7
  • Emergency Service Available


Authorized Service Provider for Micro-Vu Vision Systems in

  • Illinois
  • Wisconsin
  • Indiana
  • Missouri
  • Iowa
  • Arkansas
  • Oklahoma
  • Texas

ATI Is Factory Trained For Service & Calibration For:


Vision Inspection Machines, Multisensor Inspection Machines, Field of View Systems
Optical Profile Inspection System

Hardness Testers / Durometers
All Precision Measurement Devices

Optical Comparators / Force Testing Systems
X5 / M-Series / Techno Series Calibration & Repair Service
EVO Cam II, Lynx, Mantis, Microscopes, Viewers