JM Test Systems Mattoon IL

At JM Test Systems, we pride ourselves on being the local go-to source for professional calibration in Mattoon, electrical safety testing & repair, tool repair, onsite calibration, test equipment rentals and many more services. You can see our full list of services here. With a steadfast commitment to precision and reliability, our calibration services ensure that your equipment operates at peak performance, adhering to industry standards and regulations. For businesses in need of specialized tools on a temporary basis, our extensive inventory of test equipment rentals offers a cost-effective and convenient solution. With years of expertise and a reputation built on excellence, JM Test Systems is dedicated to meeting your every testing and calibration need in Mattoon, IL.




Calibration On-Site

  • Instrumentation
  • Electrical Safety
  • Electrical
  • Mechanical & Dimensional
  • Electronic / Gas Detection

Electrical Safety Testing

  • Arc Flash Suits
  • Hot Sticks
  • Insulated Tools
  • Grounding Clusters
  • Meters

Electrical Safety Testing On-Site

  • Hot Sticks
  • Insulated Tools
  • Grounding Clusters
  • Meters
  • Voltage Detectors
  • Digger Trucks
  • Mechanical Jumpers
  • Telescopic Sticks
Calibration Services
Calibration ServicesCalibration Services for Megger RKI, RAE, and KaelusCalibration Services for Skidmore, HVI, and Georg Fischer

JM Test Systems Mattoon

4555 S Hwy 45
Mattoon, IL 61938


Business Hours

  • Monday: 8 AM – 4:30 PM
  • Tuesday: 8 AM – 4:30 PM
  • Wednesday: 8 AM – 4:30 PM
  • Thursday: 8 AM – 4:30 PM
  • Friday: 8 AM – 4:30 PM
  • Sat & Sun: Closed


  • Calibration
  • Onsite Calibration
  • Electrical Safety Labs (Planned)
  • Calibration and Test Equipment Rentals
  • Tool Repair (growth)
  • Calibration training

Proudly Serving: Areas of Mattoon, Charleston, Flora, Bloomington, Marshall, Terre Haute, Decatur, Taylorville, Springfield, Peoria, Champaign and the greater state of Illinois.

Calibration Services

As an industry leader in precision measurements, JM Test Systems provides unparalleled calibration services tailored to ensure accuracy, consistency, and compliance. Utilizing state-of-the-art equipment and methodologies, our certified technicians deliver meticulous calibrations across a wide range of instruments and devices.

From multimeters and oscilloscopes to more specialized testing tools, our services ensure that each instrument meets stringent industry standards, mitigating risks and enhancing operational efficiency. Coupled with our comprehensive documentation and traceability, JM Test Systems offers a holistic calibration solution that underscores reliability, precision, and compliance. Partner with us to fortify your equipment’s integrity and maintain its peak performance.

Onsite Calibration

Learn More

Electrical Safety Lab

Ensure the utmost safety and compliance with JM Test Systems’ Electrical Safety Testing services. Dedicated to maintaining the highest standards, JM Test Systems provides comprehensive evaluations to detect potential hazards in electrical systems and equipment. Our expert team employs advanced testing methodologies to ensure that your installations meet all safety regulations, protecting both assets and personnel. Trust JM Test Systems for thorough, reliable, and industry-leading electrical safety assessments.

Test Equipment Rentals

Explore a flexible and cost-effective solution for your testing needs with our Test Equipment Rentals. Whether you’re tackling a one-time project or experiencing a surge in demand, our extensive inventory offers top-tier equipment for short-term or extended periods. Benefit from the latest technology without the commitment of a purchase, ensuring you have the right tools at your fingertips whenever you need them. Our rental solutions are tailored to fit your requirements, ensuring seamless integration into your operations. Choose Test Equipment Rentals for a hassle-free, efficient, and adaptable testing experience.

Tool Repair

Extend the life of your utility tools with JM Test Systems’ comprehensive tool repair and maintenance services. We specialize in the repair of mechanical, battery-powered, hydraulic tools, and various manual hand tools. Our seasoned technicians, boasting over 50 years of combined expertise, ensure swift and top-notch repairs, making JM Test Systems your go-to solution for tool rejuvenation. Benefit from our advanced RFID asset tracking, ensuring real-time data on your tools and safety equipment. Plus, with our convenient pick-up and delivery services, tool repair has never been more hassle-free. Opt for JM Test Systems and save on costs compared to purchasing new tools. If a tool can’t be repaired, we offer brand new replacements and even waive the evaluation fee. Trust in our extensive tool repair capabilities and request a quote today.

Calibration Training

Elevate your expertise with JM Test Systems’ Calibration Training programs. Designed for professionals seeking to enhance their understanding of calibration processes and techniques, our courses provide hands-on experience and in-depth knowledge. Learn from industry experts, understand the intricacies of calibration equipment, and ensure that your measurements are always precise and accurate. Whether you’re new to the field or looking to refresh your skills, JM Test Systems offers comprehensive training tailored to meet your needs. Enroll today and ensure the highest standards in your calibration tasks.

Customer Testimonials



I cannot say enough wonderful things about JM Test Systems! Their calibration lead time blew their competition out the water! I first came across JM at a Tradeshow and decided to give them a shot; I am so happy I did! They provide great service and will do whatever it takes to get the job done.

Mike Perrin | CoServ Electric

Speed and quality of service are paramount when dealing with tight schedules. When something needs to happen immediately, I rely on JM Test Systems.

Joey Goodwin | ISC Constructors

We struggled with equipment certs and calibrations before JM Test. Since they took over all of our equipment, we have had no audit findings in our Mechanical Integrity Programs.

Doug Hendershot | Marathon Petroleum

Excellent customer service, they can point you in the right direction of what you need to complete the job. Everything comes with certifications for record keeping & customer satisfaction.

Manuel Aguilar | Metal Fusion Specialties

I found the technicians to be highly knowledgeable and very courteous. They met all of my expectations.

Les Mayfield | T.G. Mercer/ Price-Gregory

I was in need of some equipment certified and calibrated at last minute notice and the JIM Test team jumped right on it when all the other companies would not.

William Burbank | Deepwell

They are really accurate when it goes to calibration and note everything on the equipment. They update you on the status of your equipment if there is something wrong with the device. I’m so amazed that Aggreko found them.

Dickmar Orario | Aggreko

We use JM Test Systems for all our gauge calibrations. Started using them about 3-4 years ago and we have not had a single issue. They do what they say they are going to do and always do it in a timely manner. I recommend giving JM Test Systems a call to any business that needs gauge calibrations, I’m extremely satisfied with their work.

Ray Long | Baldwin Pole & Piling Company, Inc

Pressure / Vacuum / Test Equipment
Electronic Test Equipment Calibration
  • Process Instrumentation CalibratorsCurrent, Voltage, Resistance and Multifunction
  • Frequency DevicesCounters/Timers, Generators, Oscillators, Calibrators, Modulation Meters
  • Digital Multi Meters
  • Oscilloscopes / Scope Meters
  • Distortion Analyzers
  • Power Supplies, UPS / UPS Systems
  • Smart Communicators
  • Decade Resistance Simulators
  • Capacitance Meters / Simulators
  • Multimeters / Clamp-OnBench or Hand Held
  • Meter Calibrator Calibration Services
  • Resistance Standards
  • Voltage Standards
  • Watt VAR Calibrators, Watt VAR Transducers
  • Cable Testing EquipmentTDR’s / Length Meters / Fault Locators
  • Panel Meter RepairAnalog or Digital
  • Electronic Controllers / Control Instrumentation
  • Recorders / Data loggersCurrent & Voltage
  • Time Domain Reflectometers (TDR’s)
  • Alarm Systems
  • Video Test Equipment
Fiber Optic Equipment Calibration
  • OTDR’s
  • Power Meters
  • Light Sources
  • Light Meters / Illumination Meters
  • Fusion Splicers
  • Fiber Optic Termination
  • Cleavers
  • Visual Fault Locators
  • Fiber Test Kits
Temperature Test Equipment
  • Temperature / Thermometer Calibration
  • Thermocouple Calibrators
  • Thermocouple Probe Calibration / Verification
  • RTD Calibrators
  • RTD Probe Calibration / Verification
  • Resistance Decade Simulators
  • Dry Block CalibratorsTemperature Baths
  • Sand BathsTemperature Baths
  • Oil BathsTemperature Baths
  • ThermometersGlass, RTD, Thermocouple, Thermisitor & Infrared Types
  • Temperature Switch Calibration
  • Temperature Transmitters
  • Temperature Controllers
  • Temperature Calibrators
  • Pyrometers
RF & Microwave Communication Equipment
  • Spectrum Analyzers
  • Microwave Sitemasters
  • PIM Testers(Anritsu, Kaelus, Summit, Rosenberger)
  • Signal Sources
  • Network Analyzers
  • Power Meters, Power Meter Mounts
  • Attenuators
  • Waveguide Calibration Kits
  • Watt Metersup to 125 Watts
  • Frequency Counters
  • Modulation Analyzers
  • Futronics GMDSS Tester
RF Communication Test Equipment
  • Communication Test Sets / IFR Radio Service Monitors(Analog and Digital)
  • Radio Test Sets(AM/FM, CDMA, TDMA, GSM/EDGE, APCO 25)
  • Land Mobile Radio (LMR) Devices
  • Synthesized Function Generators
  • Transmission Test Sets
  • Transponder Test Sets
  • Selective Level Meters
  • Cable and Antenna Analyzers / RF Sweep Gear
  • BER Test Sets
  • Video Test Equipment
  • Futronics GMDSS Tester
Bio-Medical Test Equipment Calibration
  • ECG Simulators
  • Ultrasonic Watt Meters
  • Safety Analyzers
  • Patient Simulators
  • Defibrillator Analyzers
  • Oxygen Analyzers
  • Radiation Detection Equipment
Electrical Test Equipment
  • Insulation TestersMegger Calibration
  • Hi Potential TestersHipot’s AC, DC, & VLFs to 200 kV
  • Dielectric TestersOil Breakdown Testers
  • Impulse Testers/Thumpers
  • Low Ohm Resistance Testers
  • Earth Ground Resistance Testers
  • Circuit Breaker Test SetsUp to 100,000A
  • Surge Comparison TestersMotor Winding Insulation Testers
  • Voltage and Current Recorders
  • Volt MetersAnalog and Digital
  • Phase Angle Meters, Phase Indicators
  • Power Quality Analyzers
  • Relay Test Equipment
  • Transformer Test Equipment
  • Oil Analysis Test Equipment
  • Motor Drives and Motor Control Devices
  • Welding-load Banks, Welding Machine Testing
Mechanical / Dimensional Calibration
Other Equipment / Measurement
  • Moisture Analyzer Repair and Calibration
  • Gravitometer(specific gravity indicator) Repair and Calibration
  • Gas Detectors
  • pH Meters
  • Aircraft Weighing System Calibration
  • Navigational Radar Aid Test Systems Calibration
  • Air Data Test Set CalibrationAir Speed, Altitude, Mach, Rate of Decline, & Rate of Descent
  • Beacon Test Set Calibration
  • Georg Fischer MSA340, MSA315, MSA330, MSA250 and MSA300
  • Theodolites, Transit Levels and Auto Levels
A2LA Accredited Calibration Service

JM Test Systems is ISO/IEC 17025 Accredited by A2LA.

View and download certificates

ISO/IEC 17025 accreditation is your assurance that our work meets the highest standards including:

  • Documented and controlled procedures
  • Controlled calibration environment
  • Trained technicians
  • Traceability with standards of suitable accuracy