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Home » Calibration


From industrial scale calibration to precision lab equipment, we can help you ensure accuracy

ISO 9001 Registered | ISO 17025 Accredited

Accuracy matters most

Click to  jump to the list of equipment we can calibrate

Inaccurate scales & measurement equipment can cost you money, time, and quality. Therefore, regular calibration is important. You can reduce the risk of overloading, underloading, or mixing improper proportions by ensuring the accuracy of your equipment.

Calibration is performed by state licensed, experienced technicians, with  certified test weights, and must be traceable to be valid.

Our experienced technicians service equipment ranging from heavy duty, industrial scales in harsh environments to high precision lab balances in controlled environments.

Each calibration performed includes a certificate, along with an “as found”, “as left” weight or measurement. We can help with torque wrenches, pressure gauges, micrometers, and calipers. Please see below or contact your local Michelli office for a complete list of our capabilities.


Need ISO 17025 Accredited Calibration?

Michelli has ISO 17025 accredited metrology labs and experienced calibration technicians. Let our team ensure your equipment or tools are up to your standards, as well as the standards required to meet compliance & safety guidelines.


Precision Measurement Equipment calibration in progress on granite surface plate

How often should you have your equipment calibrated?

The answer depends greatly on how much your profits, costs, labor or quality could be affected by an inaccurate measurement.

Legal for trade scales, including scales used in retail applications must be inspected & calibrated at a frequency set by the state.

Even if your precision measurement equipment was purchased elsewhere, we can perform calibration.

Ready to schedule your service?

We offer Standard or ISO 17025 Accredited services on the following equipment

Michelli Weighing & Measurement test weights

Mass Calibration

  • NIST Class F test weights up to 50lbs or 30kg*
  • NIST Class F analytical mass, 1 milligram to 1 kilogram

Learn more about our Mass services.

Torque & Bolting Tool Calibration

  • Mechanical “click” and dial type torque wrenches

  • Cam-over drivers and wrenches

  • Digital-pulse torque tools

  • Pneumatic bolting tools

  • Hydraulic bolting tools (up to 25,000 ft-lbs in-house)

  • Hydraulic power pump services

  • Pneumatic nut runners

Learn more about our Torque services.

Michelli Weighing & Measurement lab balance calibration

Lab Balance Calibration

  • Top loading lab balances
  • Analytical lab balances

Learn more about the services we offer for Lab Balances.

Michelli Weighing & Measurement heavy duty test truck performs truck scale calibration

Scale Calibration

  • Bench scales
  • Floor scales
  • Drum-filler systems
  • High-speed grading systems
  • Tank/hopper scales
  • Truck scales
  • Rail scales
  • Counting scales
  • Checkweighers
  • In-Motion scales

Learn more about the services we offer for Scales.

Dimensional Calibration


  • Outside micrometers
  • Inside micrometers
  • Depth micrometers
  • Analog or Digital
  • Up to 80 inches

Indicators & Other

  • Travel indicators
  • Test indicators
  • Starrett Last Word indicators
  • Height Gauges
  • Calipers
  • Dial or digital indicators
  • Snap gauges
  • Length standards

Granite Surface Plates

Learn more about our Physical/dimensional services.

Temperature Calibration

Contact Thermometers

  • Thermocouple Probes
  • Thermistor Probes
  • Resistance Temperature Detectors (RTD)
  • Bi-Metal Thermo-Wells
  • Liquid–in–Glass (LIG)
  • Surface Thermometers
  • Tank Thermometers

Non-Contact Thermometers

  • Infrared Thermometers
  • Psychrometers
  • Weather Stations
  • Heat Stress Monitors

Temperature Calibrators

  • Thermocouple Calibrators
  • RTD Calibrators
  • Dry Well Calibrators (Dry Block)
  • Liquid Baths
  • Sand Baths

Learn more about our Temperature services.


Electronic calibration equipment

Electronic Calibration

Electrical Testing

  • Digital Multimeters
  • Process Meters
  • Ammeter/Clamp Meters
  • MegOhmMeters
  • MicroOhmMeter (DLRO)
  • Phase Meters
  • Volt/Ohm/Milliamp Meter
  • R/L/C Meters
  • High Voltage Dielectric Test Sets (Hipot) up to 100 kV

Process Instruments

  • Power Quality Analyzers
  • Signal Analyzers
  • Frequency Analyzers
  • Loop Calibrators
  • T/C & RTD Calibrators
  • Multifunction Process Calibrators

Time & Frequency

  • Oscilloscopes
  • Timers
  • Stopwatches
  • Frequency Counters
  • Arbitrary Waveform Generators

Learn more about the services we offer on Electronic measurement equipment.

Pressure Calibration

  • -30 to 100 PSIG with accuracy up to +/-0.025%

  • 0 to 1000 PSIG with accuracy up to +/-0.025%

  • 0 to 5000 PSIG with accuracy up to +/-0.05%
  • 5000 to 40000 PSIG with accuracy up to +/-0.1%
  • Pressure Gauges
  • Pressure Transmitters
  • Pressure Switches
  • Pressure Valves

Air Velocity Measuring Equipment

  • HotwireAnemometers
  • Vane Anemometers

Learn more about the services we offer for Pressure measurement equipment.

Force Measurement Calibration

  • Dynamometers (electronic and mechanical)

  • Load cells (tension & compression)

  • Crane scales

  • Force gauges (electronic and mechanical)

  • Force stand fixtures

  • Multi-load cell telemetry systems

  • Custom proof-load testing

Learn more about the services we offer for Force measurement equipment.

Humidity Calibration Machine

Humidity Calibration

  • Humidity sensors
  • Hygrothermographs
  • Chilled mirror hygrometers
  • Weather stations
  • Humidity chart recorders

Learn more about our Humidity calibration services.


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View Our Certification Documentation

ISO 9001 Registered Company | ISO 17025 Accredited Laboratory

Standard Traceable Calibration

NIST is an abbreviation for the National Institute of Standards and Technology, which is a National Metrological Institute, (NMI) and a non-regulatory agency of the United States Department of Commerce. A Standard Traceable calibration ensures that your equipment has been compared to, and if necessary, adjusted to match, a standard that was calibrated and certified traceable to the SI Units through an NMI such as NIST.

Michelli Weighing & Measurement can provide Standard Traceable calibration service on equipment used to measure mass, lab balances, scales, physical dimensional tools, electronic tools, torque tools, force measurement equipment, temperature measurement equipment, and pressure measurement equipment.

ISO 17025 Accredited Calibration

In certain situations, ISO 17025 accredited calibration is required. These situations typically include critical applications, or those in which there is a high level of risk associated with inaccurate equipment. Basically, if the level of safety in a given situation could be compromised by inaccurate weighing & measurement equipment, ISO 17025 accredited calibration is typically required.

Michelli Weighing & Measurement can provide ISO 17025 accredited calibration service on equipment used to measure mass, lab balances, scales, physical dimensional tools, electronic tools, torque tools, force measurement equipment, temperature measurement equipment & pressure measurement equipment.

Certain ISO 17025 accredited calibration services cannot be performed on-site

In order to provide the lowest possible measurement uncertainty, certain types of physical dimensional calibration services must be performed in controlled environments & are only available in our ISO 17025 accredited calibration laboratories.

The controlled environment is also the reason that some physical dimensional calibration requires longer to complete. The physical dimensional equipment needs to acclimate to the conditions inside the calibration lab, which takes anywhere from 24-48 hours. This acclimation is necessary to allow the Michelli Weighing & Measurement calibration technicians to provide the lowest degree of measurement uncertainty (or highest accuracy) possible for your instrument.

Once equipment has acclimated to the calibration laboratory, the Michelli Weighing & Measurement technicians calibrate the equipment using traceable measurement standards. Lastly, the technicians perform the necessary calculations to certify the instrument & provide the customer with ISO 17025 certification.