Micro Precision is a leading provider of calibration for mechanical and electro-mechanical equipment. These service are provided to a wide range of industries around the globe. At Micro Precision, we know your research and production equipment is mission-critical, and that’s why we treat each piece with exacting precision and ISO-accredited quality. Our ISO/IEC 17025:2017 scope of accreditation covers calibration of mechanical and electro-mechanical tools.

Calibrations are always performed in accordance with manufacturers specifications. We service a wide range of customers from the aerospace and automotive industries to semiconductor manufacturers and pharmaceutical companies. Some of the items we calibrate are magnehelic, force gages, weighing devices, compression, torque, pressure gages, oxygen and hydraulic dials, high accuracy pressure calibrators, strain gages, load cells, transducers, vacuum gages, low-level capacitance diaphragms, transducers, flow instruments (liquid & gas), and velocity calibration from 100 to 7,000 feet per minute.

Weights used for calibration in a pull out drawer

Instrument manufacturers calibrated:

Ashcroft, Crystal Engineering, Druck, Dwyer, Fluke, GE, Heise, Norbar, Sturtevant Richmont, Meriam, Noshok, Rosemount, Ruska, TSI, Vaisala, WIKA, CDI, Snap-on, Omega, Sierra, Dwyer, and more…

Unmatched Expertise

Micro precision uses state of the art equipment to ensure the highest degree of measurement accuracy. With this equipment, and the expertise of our technicians, we are able to offer you the best possible turnaround time, and pricing in the industry for your mechanical and electro-mechanical calibration needs.

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Micro Precision’s ISO 17025:2017 dimensional calibration services verify all your measuring instruments and provide reliable, accurate, and traceable measurement results. Our quality instrument calibration capabilities are designed to reduce risk and inaccuracies in your measurements.

Technician using calibration software

Instrument manufacturers calibrated:

Brown & Sharpe, Deltronic, Fisher, Fowler, Glastonbury Gage, Hemco, JS Technology, Mahr, Mercury Gage, Meyer, Mitutoyo, NSK, Rahn, Scherr-Tumico, Sheffield, SPI, Southern Gage, Starrett, Tesa, Van Keuren, Vermont Gage, and more…

Endless range of equipment capabilities

Dimensional items include micrometers, calipers, gages, and tapes, as well as, high-end optics-systems, comparators, and coordinate measuring machines (CMM). Our primary dimensional laboratory has capabilities of surface flatness and roughness testers, gage blocks, cylindrical rings, and thread gages.

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We understand that precise and accurate pressure measurements are essential to our customers’ in-process safety, compliance, and management efficiency. Our absolute pressure, gage pressure, and low pressure vacuum capabilities are ISO/IEC 17025-2005 accredited, and whether we’re calibrating your pressure transmitters, deadweight testers, pressure gauges, or transducers, you can be assured that our hydraulic and pneumatic pressure calibrations will be performed with true SI unit traceability through NIST. Our pressure and vacuum calibrations are also ISO 9001 calibration-compliant, performed by our highly-trained technical staff and industry-renowned metrology and quality experts.

Technician testing gage pressure

Types of instruments calibrated:

Compound Gage, Dead Weight Tester, Master Pressure Gage, Pressure Controller, Pressure Gage, Pressure Indicator, Pressure Transducer, Pressure Transmitter, Pressure Valve, and more…

Micro Precision can meet all customer requirements with accurate and repeatable measurements you can count on. We calibrate a wide range of pressure devices. Our capabilities range from -14.7 to 50,000 psi.

We are ready to meet all your needs from analog pressure gages to high end pressure transducers; digital pressure standards and deadweight testers.

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Our full range of pressure capabilities are included in our ISO 17025 Scope of Accreditation

For pressures .2 to 1000 PSI, Micro Precision uses the Ruska 2465 Gas Piston Gauge.
This has a long history of serving national standards laboratories, commercial industry and government organizations as a primary pressure standard.

The Ruska 2465 provides the capability of generating pressures to within a total expanded uncertainty of 10 ppm to 700 kPa (100 psi) and 26 ppm to 7 MPa (1000 psi).

For pressures up to 12000 PSI, Micro Precision uses the Ruska2400 Dead Weight Tester. This was designed as a laboratory reference of pressure.

High operating range and mechanical durability are features that have been made possible by the use of a secondary piston of relatively large diameter. Micro Precision utilizes a Gas Pressure Booster in conjunction for calibrating gas gages.

For Pressure up to 50000 PSI, Micro Precision uses a Pressure Comparison System, which is capable of generating hydraulic pressures up to 50,000psi at an accuracy of +/- 0.2% of reading.


Torque wrenches are used in several industries. Automotive, aviation, semiconductor, manufacturing and nuclear. Torque wrench calibration is critical for all processes, from on the manufacturing floor, to aircraft servicing and maintenance. Micro Precision’s CDI Torque Multitest Premier Calibration System allows us to perform hands-free calibrations on Torque Wrenches up to 2000 ft/lbs. as well as Tensiometers/Cable Tension Meters all with a single standard.

We also calibrate Torque Multipliers up to 20,000 ft/lbs. using our Master Torque Tester. Micro Precision offers a wide range of torque calibrations.

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Mountz Torque Preferred Calibration Providers

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Torque wrench being calibrated on a bench

Torque equipment calibrated:

Dial Torque Wrench, Digital Torque Gage, Digital Torque Tester, Torque Analyzer, Torque Arm, Torque Calibrator, Torque Driver, Torque Gage, Torque Gun, Torque Handle, Torque Indicator, Torque Limiter, Torque Meter, Torque Multiplier, Torque Screwdriver, Torque Sensor, Torque Standard, Torque Tester, Torque Transducer, Torque Watch

Torque Wrench Specifications

All torque wrenches fall into different categories based upon style of the manufacturer, Click Style, Beam, Digital, or Dial Style Torque Wrench.

The actual “Click” from a wrench is considered a “Cycle” of that wrench. Most manufacturers recommend click-style torque wrench calibration after-5000-cycles. For most customers, this means you should calibrate and test torque wrenches every 12 months.

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Our Mass calibration labs are designed and constructed to meet the recommended environmental and procedural practices as detailed by the National Institute of Technology (NIST).

Our capabilities range from Class 1 to Class 7, 1mg to 100kg, which give us a wide range of services to offer our clients. Our labs have been accredited to ISO/IEC 17025 for mass calibration which ensures we meet your calibration quality requirements.

Table full of heavy weights used for mass calibration

Instrument manufacturers calibrated:

Denver Instrument, INSCO, Rice Lake, Troemner, Ohaus, Mettler, Toledo, and more…

Weight Calibration

Micro Precision’s Mass Standard calibration laboratories have stringent environmental controls. We ensure all weights are provided an adequate temperature stabilization period which allows them to acclimate to the surrounding lab environment.

Our Mass calibration labs are equipped with marble tables for the lab comparators. This helps reduce vibrations. Micro Precision utilizes certified test weights to perform modified single and double substitution calibration verifications. With traceability through national laboratories we provide accurate and repeatable calibration services which will meet all quality requirements.

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Using state-of-the-art master load cells and dead weights, Micro Precision can provide tension calibration services up to 400,000 lbf, and compression calibration up to 3,000,000 lbf. We also provide custom fixtures and load cell calibration services for machines in your facility, to help accommodate your calibration needs.

Technician performing load cell calibration using an automated force tester

Instrument manufacturers calibrated:

Tinius Olsen, Instron, HBM, Chatillon, Sensotec, Shimadzu, Admet, Lloyd, Thwing-Albert, Forney, Humboldt, Test-Mark, and more…

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Start your request today to have one of our calibration specialists perform a force equipment calibration, repair, or validation service.

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Flowmeters are a critical part of testing and measurements used in a wide variety of applications where accurate flow measurements are essential. Equipment calibration applications include (but are not limited to) HVAC, energy and utilities, water management, aerospace, agriculture and the pharmaceutical industry. Regular calibrations assure you that the flowmeter’s measurements are as accurate as their specifications say they are.

Digital flow rate meter testing liquid flow rate inside pipes

Flow meter calibration:

Coriolis Flow Meter, Electromagnetic Flow Meter, Gas Flow Meter, Laminar Flow Meter, Liquid Flow Meter, Magnetic Flow Meter, Optical Flow Meter, Paddle Wheel Flow Meter, Rotometer Flow, Thermal Mass Flow Meter, Turbine Flow Meter, Ultrasonic Flow Gauge, Velocity Meter, Venturi Meter Flow, Viscosity Cup \ Viscosity Meter, Vortex Flow Meter

Calibration Specifics

Using the flow calibration system, we perform high accuracy gas flow device calibrations in the range of 0.05 – 3000 LPM to an accuracy of 0.6% of reading.

Water Flow Calibration uses a high accuracy flow calibration system able to generate 0 to 300 gpm at .1% accuracy using Endress + Hauser Coriolis Flow Meter.

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Micro Precision has the capability of performing 17025 accredited air velocity calibrations of anemometers and other wind speed indicators.

Our wind tunnel has a range of 100 to 7,000 feet per minute and has an accuracy of plus or minus 2% of reading. This wind tunnel is designed to calibrate rotary vane type, ultrasonic anemometers and hot wire type anemometers.

Sensor in windtunnel for testing velocity

Velocity calibrations performed:

Air Velocity, Anemometer, Hot Wire Anemometer, Rotary Vane, Ultrasonic Anemometer, Velocity

Air Velocity Wind Tunnel

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

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Aircraft Jack Proof Load

With our on-site proof load testing, you save money, reduce downtime, and eliminate the hassles of shipping your aircraft bipod, tripod, and quadruped jacks. Testing capabilities for aircraft jacks, single-stage, multi-stage, and axle jacks with capacity of up to 75,000lbs, ensures we are able to test a wide range of aircraft jacks from many different manufacturers.

Mobile aircraft jack load calibration equipment being pulled on a trailer for on-site calibration

Aircraft Jack Calibration:

Bipod Jacks. Tripod Jacks. Quadrupod Jacks

Get Started

Start your request today to have one of our calibration specialists perform an on-site proof load service of your aircraft jacks.

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Additional Services

In addition, our mechanical and electro-mechanical calibration services include:

  • Balances
  • Durometers
  • EFD’s
  • Force Gages (Compression and Tension)
  • Hardness Testers
  • Load Cells
  • Magnehelic Gages
  • Manometers
  • Pressure Gauges
  • Pressure Transducers
  • Pull Testers
  • Scales
  • Torque (Drivers, Transducers, Watches and Wrenches)
  • Vacuum Gauges
  • Vacuum Transducers
  • Viscometers
  • Weights
  • Flow
  • and more…

Other Capabilities

Micro Precision can perform instrument calibration services on equipment from variety of applications for specific industries and lines of business. If you have a calibration need that is not listed in this area, please contact us.

Laboratory Standards

Calibration laboratory standards are critical for your organization’s most accurate measurements.

About Laboratory Standards


Micro Precision accredited optical, light, and fiber optic calibration lab services.

About Optical


Micro Precision accredited thermodynamic & chemical calibration lab services with temperature, humidity, life science, and pharma capabilities.

About Chemical

RF - Microwave

Micro Precision accredited RF & microwave calibration lab services.

About RF & Microwave


Micro Precision accredited electrical calibration lab services with multimeter, multifunction calibrator, oscilloscope, and power supply capabilities.

About Electrical


ANAB Accredited to ISO/IEC 17025-2017 Accredited semiconductor wafer thickness and precision step hight calibration.

About Semiconductor

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Service Area

If you have any inquiries, recommendations, or simply wish to connect with us, we’d love to hear from you! Please don’t hesitate to reach out to us at

22835 Industrial Place Grass Valley CA 95949

or you can contact us via phone at

(530) 268-1860

or email us at [email protected]