Recognized Laboratory Services

Global Test Supply has been a provider of instrument calibration and repair services since our founding in 1944. Each of our highly trained technicians has extensive experience in calibration and instrument repair. As a recognized provider of physical, mechanical, electrical, and frequency calibration services, we are dedicated to providing the highest quality instrument support services available.

Global Test Supply has been a provider of instrument calibration and repair services since our founding in 1944. Each of our highly trained technicians has extensive experience in calibration and instrument repair. As a recognized provider of physical, mechanical, electrical, and frequency calibration services, we are dedicated to providing the highest quality instrument support services available.

Calibration Services & Certificates

Calibration Services and Certificates
Calibration Certificate

We offer comprehensive calibration and certification services in order to help you keep your new or existing equipment at consistently high levels of operation and accuracy. All of our Recognized calibrations meet the most stringent quality requirements that are traceable to NiST standards; we record any deviation from this standard and correct it when necessary.

We provide a detailed certificate with every calibration that includes:

Calibration icon
  • Model no. and Serial no.
  • Ambient conditions
  • Date calibrated and calibration due date
  • Out-of-tolerance report
  • Uncertainties

We’re so confident in the work we do that we sign off on each and every calibration certificate we process!

Ready to send your equipment in for service?

Request a free Quote icon Application
for Calibration
Thank you for choosing to work with our recognized laboratory. In order to move forward with the processing of your request, we ask that you complete this form and submit it. A copy of your information will go directly to our team of specialists and you will receive a copy by email. Simply print that out and include it with the instrument when you send it in.

Ready to send your equipment in for service

Calcert Prime

ISO-17025:2017 Certified Laboratories

Our calibration by appointment program offers you a fast pass for the calibration of your instruments. By enrolling in Calcert Prime your equipment reserves its place in line without having to physically be there. As long as we receive your equipment on or before the appointment date, your job will be on the bench the day of your appointment. Enrollment allows you to schedule your calibration appointment up to a year in advance... Significantly reducing your lead times and expediting charges.

Enroll today!

Calcert Gold

Recognized Laboratory Services

Calcert Gold allows you to purchase 3 years of calibration for your instrument – whether you already own it, or whether you are purchasing it new from us. Under the plan you receive a 20% discount off of the calibration price, and you are locked into this price for all 3 regularly scheduled calibrations. This is applicable to any calibration that Wilmington Instrument Company performs in our facility and may not apply to certain pieces of equipment.

Request a Free Calibration Quote

Request for Free Quote
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Looking to service your instruments? Our team of qualified and skilled technicians have you covered. Use this form to provide us with the details of your specific needs and we'll send you a free estimate within 48 hours.

Repair Services

Repair Services

Trust us to satisfy all of your equipment repair needs! We pride ourselves on our capabilities to service any instrument brand or model to the highest possible quality standards.

Get your instruments repaired quickly and efficiently at affordable rates through our network of service centers. The quality of our service speaks for itself, hence why we're confident in offering you a free estimate!

It’s easy! Simply complete our online form
and we’ll be in touch to make all of the arrangements.

Global Test Supply is an Authorized Repair Center for Leading Brands

Global Test Supply is proud to be an Authorized Repair Center for NAVAC. Our recognized lab provides certified diagnostics, repairs, and calibration services using genuine parts and manufacturer-approved processes. We’re continually expanding our partnerships to offer the highest level of service and support for a wide range of equipment.

Repair centre icon

Comprehensive Calibration & Repair Capabilities

Our extensive laboratory capabilities allow us to support all of your test and measurement calibration and repair requirements; including electrical, temperature, pressure, and dimensional, to name a few. Keep in mind, if you don't see what you need here, just let us know and we're confident that we can take care of it for you.

Our extensive laboratory capabilities allow us to support all of your test and measurement calibration and repair requirements; including electrical, temperature, pressure, and dimensional, to name a few. Keep in mind, if you don't see what you need here, just let us know and we're confident that we can take care of it for you.

Air Velocity
Air Velocity

Our wind tunnel allows us to offer accredited calibrations for a variety of air velocity instruments including rotary vane and hot wire anemometers, balometers, wind speed indicators and more.

Dimensional
Dimensional

We are equipped to meet a variety of dimensional calibration analysis needs, including calipers, dial indicators, micrometers, precision weight sets and much more.

Electrical
Electronic

We are your one stop shop for your electronic systems calibration needs including: calibration controls, current shunts, insulation testers, high pot testers, milliohm meters, measurement equipment and test equipment.

Electrical
Electrical

We can provide fast, reliable and high consistency calibration results on a range of electrical test and measurement instruments, such as clamp-on meters, multimeters, and power supplies.

Gas Detection
Gas Detection

Our laboratories service both portable and fixed detectors for toxic gas, flammable gas, and confined spaces, ensuring that they are operating correctly and providing accurate and reliable results.

Humidity
Humidity

From humidity data loggers to thermo-hygrometers to high-accuracy handheld instruments, our laboratories offer traceable calibrations for nearly any brand or style of humidity meter.

Infrared Thermography
Infrared Temperature

We can handle all of your calibration needs for infrared thermometers as well as thermal imaging cameras, ensuring that your device is operating at its highest possible level of accuracy.

Luminosity
Luminance

Our laboratories use the highest specification equipment in order to calibrate photometric light meters that measure illuminance for a broad array of applications across a variety of industries.

Pressure
Physical Mechanical

Our labs are capable of calibrating dimensional measurement test equipment, pressure gauges, thermometers, furnaces, scales & balances, ovens and torque wrenches for your physical mechanical system needs.

Pressure
Pressure

We perform pressure calibrations on absolute, gauge, and vacuum measuring instruments from -15 to 15,000 PSI, including analog/dial and digital gauges, manometers, and pressure calibrators.

Temperature
Temperature

We offer a complete range of temperature calibration services for thermocouple and RTD thermometers and probes, PRTs, data loggers, as well as many other temperature measurement instruments.

Infrared Thermography
Sound

Our comprehensive capabilities include calibrating analog and digital sound level meters that feature high/low measurement ranges; A, B or C frequency weightings; and fast/slow response times.

Torque
Force

Our laboratories deliver meticulous force calibration services tailored to your instruments, ensuring unparalleled accuracy and reliability in measurements, thereby enhancing the performance and longevity of your equipment.

At Wilmington Instrument Company, we have been providing calibration services and custom calibration tools to some of the most demanding industries for over 70 years. We are metrology professionals, offering comprehensive services that are geared to meet the real-world needs of our customers. We provide more than calibration and maintenance of measuring instruments; our team can design and fabricate complete application specific engineering solutions. These are tools that are designed to meet the unique measuring requirements of your operation. From custom made calibration benches to retrofits, we apply our extensive knowledge base to deliver innovation and process enhancements. Here are some examples of projects we have completed.


Here are some examples of projects we have completed...

Test Bench
Calibration Workstation

This calibration workstation is comprised of fully-independent function-specific sub-panels, mounted in a self-contained detachable, stackable console. The components are fully interchangeable, so the bench can easily change with process needs. Its modular design allows for plug and play changeovers, and delivers high versatility in a compact space.

System features and options:

  • Pressure loop testing (using Crystal N-Vision pressure reference recorder) from vacuum to 3000 PSI for both mA output and voltage output transmitters
  • Performs both static and dynamic calibration with high-speed data logging
  • Panels can contain from 1 to 6 N-Vision base units, and consoles can be fabricated to accommodate special requirements
  • N-Vision modules are available for pressure calibration from vacuum through 15,000 PSI
  • With Crystal’s optional barometric reference, the system will perform both gauge and absolute measurements without changing modules
  • By selecting the necessary pressure modules, the system is capable of performing wet-wet differential pressure calibration at elevated operating static pressures
  • Finger tight pressure connections to 10,000 PSI are facilitated using Crystal’s CPF pressure connection toolkit
  • Dynamic testing of relief valves and pressure switches
  • Data is easily saved to a Microsoft Excel file
  • Automated calibration with report generation using Crystal’s FastCal software
  • Dynamic temperature testing and fully recordable temperature switch and transmitter testing (with optional RTD module)
  • The integral Martel MC-1210 multifunction calibrator provides source and read mA, frequency, thermocouples, ohms and RTD’s using the panel mounted Martel MC1210PM multifunction calibrator module

Test Bench Additional Information (PDF – 379KB)


Sanitary Gauge
High Accuracy Digital Sanitary Gauge Assembly

A pharmaceutical industry customer was experiencing a high failure rate on digital sanitary gauges that they were currently using in a critical process. In addition to the obvious detrimental effects of failed gauges on production, they are also very expensive and non-repairable. The failures also posed an unacceptable risk to quality compliance.

To help this customer solve their failed gauge problem we worked directly with their quality department and metrology group. Together we developed a gauge with high reliability. In the event of a failure, the gauge is fully repairable for a fraction of the replacement cost.

Calibration Console
Calibration Console

An oil and gas industry customer approached us to retrofit an existing test bench with a calibration console. They provided many functional requirements including the ability to easily add or modify features for future processes. Fully configured, the calibration console was built with the following capabilities and features:

  • Calibrate pressure gauges, switches, and transmitters from vacuum to 15,000 PSI, in both gauge and absolute pressure in any English or metric engineering units
  • Optional software package collects data from the UUT and creates a complete calibration report
  • Accuracy of 0.06″ H20 at the low end facilitates accurate calibration of DP type flow transmitters
  • Accuracy of .025% of reading up to 300 PSI and accuracy of .05% of reading for calibrations above 300 PSI and up to 15,000 PSI
  • High-speed data recording capability (up to 10 X per sec.) accommodates data collection for dynamic testing of relief valves
  • Panel mounted multi-function calibrator simulates and reads thermocouples, RTD’s, ohms, frequency, DCV, and DC mA
  • Integral 24VDC power supply to power transmitters on the bench
  • Panels can be customized to accommodate additional functions and requirements

Custom Workbench
Custom Workbench

This custom workbench was designed and fabricated for a pharmaceutical industry application. The customer provided us with tight specifications that had to be met in order for the unit to fit into an existing work cell. All dimensions including height, width, depth, and shelf width and height were critical. They also wanted the flexibility to allow changes to the bench’s configuration to accommodate changes in process down the road. Because of our experience and expertise, we were able to meet all of these criteria as well as schedule and price point.


Batch Counter/Controller
Batch Counter/Controller

In this project, we helped a customer who needed a solution for an existing flow meter register test fixture. Their specifications included the ability to pre-set up to 1 million revolutions on an integral batch counter. Then, upon reaching the desired number of revolutions, the system would automatically shut down. Our team essentially developed and built a plug-and-play solution. Our unit met all the design criteria and could be installed on the existing test fixture without requiring any internal modifications to the existing equipment.


Custom Calibration Workbench
Custom Calibration Workbench

This is an example of a custom calibration workbench that we designed and fabricated for a long time customer. This unit was designed for calibrating pressure gauges, pressure transmitters, and pressure switches. The unit includes a cart with drawers for storing calibration accessories, tools, hoses, and fittings. In addition, the console can be easily detached from the bench and attached to the cart to create a mobile calibration workstation. Our innovative, robust design ensured that the workbench would provide value and long service life.


Engineered Solutions - Comprehensive services to meet real-world needs

Our custom calibration tools and workbench fabrication capabilities are supported by calibration services that encompass a vast array of standard and unique applications. Either in our state of the art laboratory or on-site at your facility or job site, we deliver world class recognized calibration services that set the standard for quality and value. From gauge, meter, sensors, and detectors, to complex mechanical and opto-mechanical systems, our team has the tools and expertise to meet virtually any calibration requirement.

We are also a major supplier of a wide range of calibration tools and supplies; these include instruments for gas detection, pressure, level and flow, electrical, temperature testing, and much more. We offer various types of data recorders and loggers, power analyzers, thermal imaging, controllers, transmitters, and displays, and other analytical tools. Whether you need a custom engineered solution, comprehensive calibration program, or regular deliveries of supplies and consumables, we provide a level of customer service that is unmatched in the industry. Our knowledgeable, proactive staff takes great pride in delivering innovation and value that allow us to become an integral part of our customer’s quality departments.

Lead Times are quoted on job by job basis and we support emergency and rush services as well.


Industry Standards
  • ANSI - American National Standards Institute
  • ASI - Aerospace Industry Standard
  • ASMEI - American Society of Mechanical Engineers
  • ASTMI - American Society for Testing and Materials
  • DOTI - Department of Transportation
  • FAAI - Federal Aviation Administration
  • FDAI - Food And Drug Administration
  • Mil-SpecI - Military Specifications
  • RoHSI - Restriction Of Hazardous Substances (Compliant)

Industry Focus
  • Aerospace
  • Agricultural & Farming
  • Alternative Energy
  • Automation
  • Automotive
  • Biomedical
  • Biopharmaceutical
  • Biotechnology
  • Chemical
  • Chemical Manufacturing
  • Chemical Processing
  • Commercial
  • Communications
  • Computer and Electronics
  • Dairy
  • Defense Industry
  • Department of Energy (DOE)
  • Department of Defense (DOD)
  • Electrical
  • Electronics
  • Energy (See Power Generation)
  • Food Production
  • Food Handling
  • Food Processing
  • Food & Beverage
  • Fracking
  • Government
  • HVAC
  • Hydraulics
  • Industrial
  • Injection Molding
  • Laboratory
  • Natural Gas
  • Liquid Propane
  • Manufacturing
  • Marine
  • Material Handling & Processing
  • Medical
  • Medical Devices
  • Military
  • Mining
  • Molding
  • Municipal
  • Nano Technology Manufacturing
  • Nuclear (see Power Generation)
  • Oil & Gas Pipeline
  • Oil Field
  • Oil, Gas, Petroleum Exploration
  • Oil, Gas, Petroleum Extraction
  • Optical
  • Packaging
  • Packaging & Converting
  • Paper & Pulp
  • Paper Mill
  • Petrochemical
  • Pharmaceutical
  • Plumbing
  • Pneumatics
  • Power Generation
  • Power Generation Nuclear
  • Power Generation Alternative
  • Power Generation Solar
  • Power Generation Wind
  • Power Generation Coal
  • Power Generation NG
  • Printing
  • Printing & Publishing
  • Process Gases
  • Pulp & Paper
  • Pulp Manufacturing
  • Pumps
  • Railroad
  • Research
  • Robotics
  • Semiconductor
  • Specialty Machinery
  • Telecommunications
  • Transportation
  • Universities & Learning Institutions
  • Vacuum Electronics
  • Waste Management
  • Wastewater
  • Water & Wastewater Treatment

Ask our experts anything!

We're ready to answer any and all of your questions. You can email, call 1-888-610-7664 or submit your question to us using this form. Our team will review your inquiry and reply to you with a solution specifically tailored to your needs. Expect nothing less from us!

Ask our experts

We're ready to answer any and all of your questions. You can email, call 1-888-610-7664 or submit your question to us using this form. Our team will review your inquiry and reply to you with a solution specifically tailored to your needs. Expect nothing less from us!

Ask our experts
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Service form iconApplication for Calibration