Audit-Ready and
In Control

Providing reliable and cost-effective accredited calibration services to all 50 States and Puerto Rico since 1979.

ISO/IEC 17025 Accredited Laboratory

At Calser Calibrations we take calibration seriously. That’s why we’re ISO/IEC 17025 accredited. This accreditation demonstrates our commitment to precision measurement, rigorous quality control, and industry-leading expertise. All of our calibration equipment is traceable to the International System of Units (SI) through NIST.

View Our Accreditation

Our Calibration Services

As a leading accredited calibration laboratory serving the region, our calibration lab provides comprehensive solutions tailored to your precision needs. We offer professional instrument calibration services, including specialized load cell calibration and oven calibration, to ensure your equipment meets the highest industry standards. With a focus on accuracy and convenience, we provide NIST traceable calibration both at our facility and through flexible on site calibration options to keep your operations running smoothly throughout the St. Louis area and across the country. Browse through of our calibration service categories to learn more:

Construction material testing equipment calibration in St. Louis and surrounding areas.

Construction Materials Testing Equipment

Expert instrument calibration services for equipment used in structural testing to ensure compliance and precision in the field or lab.

Dimensional Calibration

High-precision measurement verification calipers, micrometers, gauges, plus more, performed by our accredited calibration laboratory.

Force Calibration

Specialized load cell calibration, tension testing, plus more, to ensure the structural accuracy of your force-measuring equipment.

Mass Calibration

NIST traceable calibration for laboratory balances and industrial scales to maintain exact weight standards and regulatory compliance.

Pressure Calibration

Precise testing and adjustment of pressure gauges and transducers conducted at our professional calibration lab to ensure operation safety.

Temperature Calibration

Essential oven calibration, thermometer, data logger, and more to maintain strict thermal control and consistency in your production processes.

Time Calibration

Accurate verification of timing devices and frequency counters available through our convenient on site calibration services.

Torque Calibration

Professional adjustment of torque wrenches and drivers to guarantee assembly integrity and meet rigorous industrial safety requirements.

Powered By Accredited Labs

As part of the Accredited Labs family, we bring you industry-leading calibration services backed by ISO/IEC 17025 accreditation, advanced technology, and a commitment to precision.

Customer-Centered Service

We prioritize clear communication, consistency, and reliability—ensuring your equipment is calibrated accurately, on time, and with minimal disruption to your operations.

Tailored Solutions for Your Industry

Our expert team takes the time to understand your unique calibration needs, providing customized support to keep you compliant and performing at your best.

Aerospace industry equipment calibration in St. Louis and surrounding areas.

Aerospace and Defense

Ensuring the highest levels of safety and precision for mission-critical components through rigorous equipment verification and strict quality control standards.

Automotive

Supporting high-volume manufacturing and assembly lines with reliable testing solutions to maintain vehicle safety, performance, and structural integrity.

Construction industry testing equipment calibration in St. Louis and surrounding areas.

Construction Materials and Machinery

Validating the durability and accuracy of heavy-duty equipment used in large-scale infrastructure projects and structural material testing.

Educational industry equipment calibration in St. Louis and surrounding areas.

Educational Institutions

Providing reliable technical support for research labs and academic programs that depend on consistent measurement accuracy for scientific discovery and training.

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.

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.

Stay Compliant & Audit-Ready

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