ISO/IEC 17025 Accredited Time Calibration

Precise time measurement underpins modern technology, from telecommunications and GPS navigation to financial systems, power grids, and precision manufacturing. Our national network of local calibration experts delivers the accuracy you need, from supporting synchronization and preventing errors to maintaining operational reliability.

Schedule Service
Find a Location
AdobeStock_109638867__Time__Large-Block

Our Time Calibration Services

Timing and frequency instruments are critical across industries where precision is essential.


When instruments drift out of specification, the effects can be far-reaching, causing communication failures, navigation errors, financial transaction disputes, power grid instabilities, and manufacturing quality issues. The Accredited Labs network provides specialized time calibration services to keep your instruments performing within their required accuracy ranges.

Group 17

Our Process 


Time calibration involves verifying and adjusting instruments that measure time intervals, frequencies, and synchronization signals. Each device is compared to atomic clock references and national time standards to identify deviations from intended performance.

Expert technicians evaluate instruments using precision frequency counters, time interval analyzers, and atomic clock references across the full measurement range. They document all variations and may make the adjustments needed to restore accuracy. If an instrument cannot be restored to its required accuracy range, you receive detailed reporting with the data necessary for corrective action, system optimization, or replacement decisions.

All time calibrations follow nationally recognized protocols and standards, providing traceability to Coordinated Universal Time (UTC). Each instrument is returned with documentation linking its accuracy to national atomic clock standards—supporting telecommunications, navigation, financial systems, and other precision timing applications.

Types of Time and Frequency Instruments We Calibrate

Our comprehensive time calibration services cover the complete spectrum of timing and frequency measurement instruments used across critical applications:

  • Frequency Counters and Time Interval Analyzers: Precision instruments that measure frequency, period, and time intervals with high accuracy. These instruments require calibration of timebase references, measurement circuits, and display systems to ensure accurate timing measurements across their full measurement capabilities.
  • Atomic Clocks and Precision Oscillators: High-stability timing references including cesium clocks, rubidium oscillators, and crystal oscillators used as timing standards in critical applications. Calibration verifies frequency accuracy, stability, and aging characteristics against national atomic clock standards.
  • GPS Timing Receivers: Specialized receivers that extract precise timing signals from GPS satellites for use as timing references in telecommunications, power systems, and synchronization applications. Calibration ensures accurate timing extraction and output signal characteristics.
  • Network Time Protocol (NTP) Servers: Computer-based timing systems that distribute precise time information over networks for computer synchronization and network timing applications. Calibration verifies timing accuracy, network delays, and synchronization performance.
  • Telecommunications Timing Equipment: Specialized timing systems used in cellular networks, internet infrastructure, and telecommunications equipment for network synchronization and signal coordination. These systems require calibration to ensure network timing accuracy and reliability.
  • Stopwatches and Digital Timers: Precision timing instruments used for manufacturing process timing, quality control, and measurement applications. Calibration ensures accurate time measurement for industrial and laboratory timing requirements.
  • Time Code Generators and Readers: Instruments that generate or decode time code signals used for equipment synchronization, data logging, and timing distribution. Calibration verifies time code accuracy, signal characteristics, and synchronization performance.
  • Frequency Standards and Signal Generators: Precision frequency sources used as references for testing, calibration, and timing applications. These instruments require calibration to ensure frequency accuracy and signal stability for use as timing references.
  • Phase Measurement Equipment: Instruments that measure phase relationships and timing differences between signals for synchronization and timing analysis applications. Calibration ensures accurate phase and timing measurements across various signal types and frequencies.
  • Oscilloscopes with Timing Functions: Test instruments with precision timing measurement capabilities used for signal analysis and timing verification. Calibration verifies timebase accuracy and timing measurement functions for reliable timing analysis.

Find Time Calibration Services
Showing 26 companies
Calibration Types 0
▼
Onsite Service Locations 0
▼

  • Accutek Lab

    Accutek Lab has been providing reliable and cost-effective pipette calibration services across the United States since 1996.

    WEBSITE ACCREDITATION

  • Aldinger

    Since 1972, Aldinger has been providing top-quality calibration services for test and measurement equipment in Texas and beyond.

    WEBSITE ACCREDITATION

  • Cal-Cert

    Cal-Cert is committed to providing the highest level of calibrations and certification service to our customers.

    WEBSITE ACCREDITATION

  • Cal-Labs

    Cal-Labs has provided quality calibration in Southern California since 1977. We are A2LA accredited to ISO 17025. 

    WEBSITE ACCREDITATION

  • Calibration Services Inc.

    Calibration Services, Inc. (CSI) is an on-site and in-house calibration firm specializing in calibration and service of mechanical testing devices.

    WEBSITE ACCREDITATION

  • Cal Tec Process Management

    The calibration specialists at CTPM have been providing precision calibration and quality assurance since 1987.

    WEBSITE ACCREDITATION

  • Calser Calibrations

    Since 1979, Calser Calibrations has delivered trusted, precision calibration services backed by a commitment to quality and reliability.

    WEBSITE ACCREDITATION

  • CMG Sales, Inc.

    CMG Sales, Inc. is a leading manufacturer sales representative and ISO 17025 accredited calibration laboratory providing services to manufacturers nationwide.

    WEBSITE ACCREDITATION

  • Color Calibration Group

    Color Calibration Group has been providing professional calibration services for all your color, light, and viscosity calibration needs for over 25 years.

    WEBSITE ACCREDITATION

  • ETI Precision

    ETI has been a leader in the calibration, repair, and sale of test and measurement equipment since 1994, and covers all 50 states.

    WEBSITE ACCREDITATION

  • Holts Precision, Inc.

    For over 60 years Holts Precision, Inc. has performed calibrations & repairs on all major brands of gaging equipment.

    WEBSITE ACCREDITATION

  • Huston-DePue

    Established in 1960, HDCL is staffed by experienced professionals who understand the critical role accurate measurement plays in quality control and regulatory compliance.

    WEBSITE ACCREDITATION

  • Instrument Technologies, Inc.

    For over three decades, Instrument Technologies, Inc. (ITI) has been a trusted partner for regulated industries seeking precision, compliance, and operational reliability.

    WEBSITE ACCREDITATION

  • IPM, Inc.

    Industrial Process Measurement, Inc. has been in the instrument supply, service and calibration business for over 30 years.

    WEBSITE ACCREDITATION

  • J & J Calibration Service

    J&J Calibration Service, an ISO-17025 accredited company, offers unmatched mobile calibration capabilities and laboratory calibration services.

    WEBSITE ACCREDITATION

  • OCS Technologies

    Founded in 1930, OCS Technologies is a trusted multi-discipline calibration service provider as well as leading product distributor.

    WEBSITE ACCREDITATION

  • OnCal

    With over 23 years of experience in pipette calibration in the Pacific Northwest, the OnCal Corporation guarantees seamless and dependable metrology services.

    WEBSITE ACCREDITATION

  • Precision Calibration Systems

    PCS is a full-service ISO 17025 Accredited calibration laboratory, founded with the goal of providing reliable and accurate instrument calibration service.

    WEBSITE ACCREDITATION

  • Quality Control Services

    Quality Control Services is an established, accredited calibration services and laboratory equipment company with over 40 years of experience.

    WEBSITE ACCREDITATION

  • Quality Surveillance, Inc.

    QSI has been providing Los Angeles, Ventura, Santa Barbara and Santa Clarita Counties with reliable and cost effective metrology services since 1992.

    WEBSITE ACCREDITATION

  • Servo Innovations

    Servo Innovations, founded in 2005,  has earned industry-wide trust for its accredited calibration, repair, and technical services.

    WEBSITE ACCREDITATION

  • Tescom Calibration Services

    Tescom Calibration Services has provided sales, repair, and calibration of telecom test equipment since 1982.

    WEBSITE ACCREDITATION

  • Trident Calibration Labs

    Serving the greater Phoenix area, Trident Calibration Labs has more than 100 years of combined calibration experience.

    WEBSITE ACCREDITATION

  • Tru Cal International

    Serving as an asset to countless businesses in a variety of industries, Tru Cal International has specialized in test equipment calibration since 1992. 

    WEBSITE ACCREDITATION

  • Utah Scale Center

    Utah Scale Center offers servicing and calibrating of industrial scales across the Rocky Mountain Region, with 70+ years of experience.

    WEBSITE ACCREDITATION

  • Washington Calibration

    Washington Calibration has been providing customers with quality gage repair services for all their inspection measuring instruments for more than 34 years. 

    WEBSITE ACCREDITATION

Audit-Ready Calibration in 3 Simple Steps
1

Submit Your Equipment List

Send us a list of the equipment you need calibrated, and we’ll provide a tailored quote with clear pricing—no hidden fees.
2

Schedule Your Calibration

Choose a convenient time for a mobile or on-site equipment calibration. Our certified technicians ensure precision and compliance with ISO/IEC 17025 standards.
3

Stay Compliant & Audit-Ready

Receive detailed calibration reports and certification, giving you peace of mind for audits and operational excellence.
Icons_BK_HandGear

Comprehensive Services

We offer a wide range of calibration services, covering various equipment 
and instruments.

Icons_BK_GroupPeople

Industry Expertise

Our team has extensive experience 
across multiple industries, ensuring 
top-notch service.

Icons_BK_TruckBox

Nationwide Network

With locations across the country, 
we provide reliable services wherever 
you are.