Dimensional and Gauge Calibrations

At Constellation PowerLabs, precision is central to every dimensional and gauge calibration service we perform. Our ISO 17025-accredited, environment-controlled dimensional labs support a wide range of measurement applications, backed by 100 years of metrology expertise.

We utilize advanced measurement equipment, established calibration procedures, and controlled laboratory environments to produce repeatable results with traceability to NIST standards. As a full-service calibration provider performing over 70,000 calibrations annually, we help highly regulated organizations maintain confidence in the measurements that support quality, manufacturing, inspection, and maintenance activities.

Dimensional Calibration Services are the comparison of a known physical standard to an unknown unit under test (UUT). It includes measuring physical dimensional test equipment, including calipers, bore and depth gauges, dial indicators, durometers, end-measuring rods, rings and plugs, o-rings, optical flats, thickness gauges, angle indicators, length standards (gauge blocks), rulers, laser length devices, optics, and various dimensional fixtures.

We measure and certify these hand tools and instruments against length, height, depth (caliper and micrometer calibration), diameter, size, angle, radius, flatness, parallelism, perpendicularity, squareness, concentricity, major or minor diameter along with pitch diameter, and Rockwell hardness, X, Y, & Z axis (optical comparator calibration) to ensure that they provide accurate, repeatable readings when you use them.

Throughout the world, using these dimensional tools ensures that all measurements are accurate and transferable. A great example of this would be if a company wants to build an engine but cannot make all the parts for the engine themselves. Without accurate measurement tools in the industry, the parts made for this engine might not fit or be compatible. Dimensional and gauge calibration certificates certifies that everyone building parts for this engine measures for the same dimensions.

There are many types of gauging specialized tools used in the dimensional testing of a company’s product such as a gauge pin. This instrument is typically used to check the diameter of a hole bored into a fixture. Our laboratory can calibrate the size of the gauge pin to ensure that the hole is not too big or small when the pin is inserted (Go/No-Go pin). These specialized gauges give an accurate, efficient way to check products, especially when the test might be a customized sizing.

When we receive an instrument, we allow at least a 24-hour environmental soaking time in the laboratory to bring the unit under test to a 68 degrees F state. This temperature is critical when performing gauge calibrations on gauge blocks. Our technicians use cotton gloves when handling the unit so that we do not transfer body heat or contaminate the component with oil from our skin. In most cases, we clean the unit using ethyl alcohol, which does not leave residue.

Next, we set up and prepare standards for the calibrations. Our impressive, quality-driven technicians ensure all sources of error are accounted for in every measurement. The technician then performs the calibration following the rigid qualifications associated with procedures assigned to the unit under test, comparing it against the manufacturer’s specifications. They then record the values on a data sheet developed specifically for that unit.

Lastly, we determine if the unit has passed or failed its testing before developing a calibration certification. If it has failed, our techs will send an out of tolerance report based on the findings. Upon conclusion, we place a calibration sticker on the unit that confirms that the instrument has been calibrated and then has it shipped back to the customer.

Constellation PowerLabs calibrations are traceable to NIST, are ISO 17025 qualified in dimensional disciplines under A2LA, and employ knowledgeable technicians dedicated to quality. Our 100+ years of providing quality calibrations is indicative of our longevity. We pride ourselves on the knowledge and expertise we’ve gained throughout these decades, and are dedicated to providing accuracy on all calibration equipment for all dimensional and gauge calibrations.

If you are interested in receiving a quote for our dimensional and gauge calibrations, please contact us by filling out our form on our contact page!