Calibration Services You Can Count On
Ensure accuracy, reliability, and compliance with ISO 17205 accredited calibration services
ISO/IEC 17025 Accredited Calibration Services
Calibration services by OCS are ISO/IEC 17025 accredited by the ANAB ANSI Accreditation Board. Centrally located in Cleveland, Ohio, our labs use state-of-the-art calibration technology and instrumentation that is critical to your success and ours.
We also continually invest in the latest calibration software and metrology equipment to provide the most efficient and accurate calibration possible.
Whether at your site or in our labs, our team will provide the calibration and repair services that match your timetable and workflow needs.
All OCS calibration documentation satisfies ISO/IEC 17025 requirements.

Precision Calibration Services Tailored for You
Comprehensive Solutions
From new equipment setup to calibration, repairs, and audit support, we handle every stage of your equipment’s lifecycle.
Fast & Efficient
Minimize downtime with our quick turnaround times. Plus, get your calibration certificates immediately after service completion.
Flexible Support
Choose the calibration method that works best for you, including in house and on-site calibration.
Trusted Experts
Backed by a long history of metrology expertise, our team is made up of highly skilled technicians dedicated to precision and reliability.
Fields of Calibration
We provide ISO 17025 accredited calibration for a wide range of measurement devices, dimensional standards, gauges, and hand tools. Our environmentally controlled laboratory ensures precision with advanced automated test equipment, delivering unmatched accuracy and efficiency.
All calibrations are traceable to the International System of Units (SI) through NIST, guaranteeing compliance and reliability.
Explore our fields of calibration below to see our full range of capabilities.
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Balance Calibration Services
Balance Calibration Services
- On-site calibration and adjustments
- Certificates including full before/after data
- Varying levels of preventive maintenance
- USP 41 testing and calculations
- External and internal cleaning. polishing, and testing
- Troubleshooting and repair work
- Flexible service contracts
- Trend analysis and history reporting
Balances we calibrate include:
- Analytical Balances
- Top Loading Balances
- Compact Balances
- Precision Industrial Balances
- Moisture Analyzers
Balance manufacturers we calibrate include:
- A&D Weighing
- Acculab
- Adams
- Ainsworth
- American Scientific
- Denver Instruments
- Mettler Toledo
- Ohaus
- Rice Lake
- Salter Brecknell
- Sartorius
- Shimadzu
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Dimensional Calibration Services
Dimensional Calibration Services
- OCS Technologies Services Include:
- Uncertainties to 5 micro-inches (0.000005”)
- Calibration and adjustments
- Certificates including full before/after data
- In-laboratory and/or on-site service
- Free pick up and delivery
- Minor repair work
- Flexible service contracts
- Trend analysis and history reporting
- Fast turnaround
Dimensional Products we calibrate include:
- Calipers
- CMM Balls
- Crimp Tools
- Dial Bore Gages
- Dial Indicators
- Depth Gages
- Feeler Gages/Shims
- Gage Blocks
- Height Gages
- Laser Micrometers
- Micrometers
- Optical Comparators
- Pin Gages
- Plug Gages
- Ring Gages
- Snap Gages
- Spheres
- Steel Rules
- Thread Plug Gages
- Threaded Ring Gages
- Thread Wires
- Vision Systems
Dimensional Manufacturer Brands we calibrate but not limited to:
- Alameda
- Ames
- Brown & Sharpe
- CDI Chicago
- Dundick
- Flexbar
- Fowler
- Glastonbury Southern Gage
- Hemco Gages
- Insize
- Mahr Federal
- Meyer Gauge
- Mitutoyo
- Starrett
- Scherr-Tumico
- Vermont Gage
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Electrical Calibration
Electrical Calibration
- AC/DC Volts to 25,000V
- AC/DC Current to 1000A
- Resistance to 1.1 GOhm
- Calibration and adjustments
- Certificates including full before/after data
- Laboratory and/or on-site service
- Free pick up and delivery
- Minor repair work
- Flexible calibration contracts
- Trend analysis and history reporting
- Fast turnaround
Electrical Calibrations Include:
- Current Meters
- Dielectric Testers
- Ground Bond Testers
- Hipot Testers
- Megohmmeters
- Multimeters
- Oscilloscopes
- Recorders
- Scope Meters
- Stopwatches
- Timers
- Volt Meters
- Watt Meters
Electrical Manufacturer Brands we calibrate but are not limited to:
- B+K Precision
- Bird Electronics
- Fluke
- HP/Agilent
- Instek
- Kenwood
- Keithly
- Omega
- Phillips
- Tektronix
- Waketek Meterman
- Yokogawa
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Force & Material Tester Calibration
Force & Material Tester Calibration
- ASTM E4 compliant calibration using Morehouse Precision Load Cells up to 50,000 lbs.
- Calibration and Adjustments in tension and compression
- Certificates including full before/after data
- Onsite and ship-in service
- Calibration of force, speed and distance parameters
- Troubleshooting and repair work
- Flexible Calibration Contracts
- Trend Analysis and history reporting
Force Measurement / Materials Testing Calibration Include:
- Digital Force Gauges
- Dynamometers
- Hydraulic Testers
- Load Cells
- Material Testers
- Mechanical Force Gauges
- Mechanical Test Stands
- Motorized Test Stands
- Tension Meters
- Tension Testers
- Universal Material Test Stands
Force/Material Brands we calibrate but are not limited to:
- Admet
- Ametek
- Baldwin
- Chatillon
- Dillon
- Imada
- Instron
- Lloyd Instruments
- Mark-10
- Mecmesin
- Satec
- Starrett
- Tinius Olsen
- United
- Zwick
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Hardness Calibration
Hardness Calibration
- Indirect Verifications per ASTM E18 for Rockwell Hardness Testers
- Certificates Include full before/after data
- Onsite and ship in service
- Flexible Calibration Contracts
- Trend Analysis and history reporting
Hardness Manufacturer Brands we calibrate but are not limited to:
- Instron
- Mitutoyo
- New Age
- Phase II
- Shimadzu
- Starrett
- Tinius Olsen
- TE
- United
- Wilson
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Mass Calibration
Mass Calibration
- Periodic Verification
- Refurbishments for cast iron and working class masses
- NIST Traceable
- ISO 17025 Certificates
- Ship-in, and pickup/drop 0ff service
- Fast Turnaround
Mass Standards and Test Weight Calibration includes:
- Custom Weights
- Standard Mass Sets
- Test Blocks
- Test Weights
Typical Weights and Mass Standards we calibrate but are not limited to:
- Denver Instruments
- Ohaus
- Rice Lake Weighing Systems
- Troemner
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Optical and Vision Calibration
Optical and Vision Calibration
- General Cleaning and lubrication
- Minor Mechanical Adjustments
- Verification of X & Y Linearity (and Z Axis where applicable)
- Verification of magnification of additional lenses
- Angle Verification
- Parfocalization of auto focus
- Pacentricity of zoom lens
Optical & Vision Products we calibrate include:
- Benchtop Optical Systems
- Microscopes
- Optical Comparators
- Optical Measurement Systems
- Profile Projectors
- Video Inspection Systems
- Video Scopes
- Vision Systems
Optical and Vision Manufacturer Brands we calibrate but not limited to:
- Certified Comparator Products
- Deltronic
- Fowler
- Gagemaster
- J&L
- Jones & Lamson
- Keyence
- Kodak
- Micro-Vu
- Mitutoyo
- Nikon
- OGP
- SPI
- S-T Industries
- Starrett
- Suburban Tool
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Pressure Instrument Calibration
Pressure Instrument Calibration
- Calibration up to 10,000 psi
- Calibration and adjustments
- Certificates including full before/after data
- Laboratory and/or on-site service
- Free pick up and delivery
- Minor Repair Work
- Flexible calibration contracts
- Trend analysis and history reporting
- Fast Turnaround
Pressure instruments we calibrate include:
- Analog pressure gauges
- Differential pressure gauges
- digital pressure gauges
- Magnehelic gauges
- Manometers
- Pressure transducers
Pressure manufacturer brands we calibrate but are not limited to:
- Ashcroft
- Dresser
- Dwyer Instruments
- Fluke
- Omega
- Setra
- U.S. Gauge
- Wika
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Scales and Weighing Systems Calibration
Scales and Weighing Systems Calibration
- Calibrations up to 120,000 lbs.
- Calibration and adjustments by state-certified technicians
- Trend analysis, history, and obsolescence reporting
- Certificates including full before/after data
- On-site and ship-in service
- Troubleshooting and repair work
- Flexible calibration contracts
Scale & Weighing Products we calibrate include:
- Batching Systems
- Bench Scales
- Checkweighing Scales
- Control Systems
- Counting Scales
- Crane Scales
- Intrinsically Safe Scales
- Floor Scales
- Forklift Scales
- Hanging Scales
- Laboratory Balances
- Load Cell Systems
- Pallet Truck Scales
- Stainless Steel Scales
- Tank Systems
Scale & Weighing Manufacturer Brands we calibrate but not limited to:
- Acculab
- Adams Equipment
- A&D Weighing
- Avery Weigh-Tronix
- B-Tek
- Cambridge Scale Works
- Cardinal/Detecto
- Chatillon
- Dillon
- Denver
- Digi
- Doran Scales
- Fairbanks Scales
- Flex-Weigh
- GSE
- Imada
- Intercomp
- LTS Scale
- Measurement Systems International (MSI)
- Mettler Toledo
- Pennsylvania Scale
- Rice Lake Weighing Systems
- Salter Brecknell
- Sartorius
- Setra
- Sterling Scale
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Thermodynamic, Temperature, and Humidity Calibration
Thermodynamic, Temperature, and Humidity Calibration
- Electrical Calibrations from -220° C to 1767° C
- Comparisons from -5° C to 1200° C
- Calibrations from 10-90% relative humidity
- Calibration and adjustments
- Certificates with full before/after data
- Laboratory and/or on-site service
- Free pick up and delivery
- Flexible calibration contracts
- Trend analysis and history reporting
- Fast turnaround
Temperature / Humidity instruments we calibrate include:
- Chart recorders
- Dry block calibrators
- Freezers
- Furnaces
- Humidity gages
- Ovens
- Pyrometers
- Temperature baths
- Temperature controllers
- Temperature gages
- Temperature inputs
- Temperature probes
- Thermocouples
- Thermocouple simulation
- Theromemeters – bi-metal
- Thermometers – digital
- Thermometers – glass
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Torque Calibration
Torque Calibration
- Calibration of tools up to 500 ft. lbs.
- Calibration of transducers up to 1000 ft. lbs.
- Calibration and adjustments including full before/after data
- Ship-in and on-site service
- Minor repair work
- Flexible calibration contracts
- Trend analysis and history reporting
- Fast Turnaround
Torque Products we calibrate include:
- Closure torque testers
- Torque cells
- Torque gauges
- Torque screwdrivers
- Torque wrenches
- Torque wrench analyzer
Torque Manufacturer Brands we calibrate but not limited to:
- AKO
- Aimco
- Ametek
- Armstrong
- AWS
- Blackhawk
- C.D.I.
- Chatillon
- CIP
- Computorq
- Craftsman
- Dillon
- Imada
- KD Tools
- Larson
- Mark-10
- Mecmesin
- Mountz
- Norbar
- NuLine
- Proto
- S-K
- Snap-On
- Sturtevant Richmont
- Tohnichi
Torque measuring devices we calibrate include:
- Closure Torque Testers
- Torque Cells
- Torque Gauges
- Torque Screwdrivers
- Torque Wrenches
- Torque Wrench Analyzers
Expert Calibration & Repair Services
No matter the issue, OCS ensures your equipment is calibrated, serviced, and back to peak performance. Our factory-trained technicians are ready to provide precise, reliable solutions so you can stay compliant and operational.