Expert Precision Calibration and Testing Services

Precision calibration is the process of verifying and adjusting measurement equipment and machine tools to ensure they meet specified accuracy standards. It compares equipment performance against known reference standards (like NIST) and documents any deviations. For CNC machines, this includes measuring linear positioning, repeatability, straightness, squareness, and rotary accuracy to confirm the machine produces parts within tolerance.

Testing evaluates equipment performance and identifies problems without necessarily making adjustments—like ballbar testing that reveals servo mismatch or backlash issues. Calibration goes further by comparing measurements to known standards and often includes correction or documentation of deviations. Testing answers 'how is it performing?' while calibration answers 'how accurate is it compared to the standard?' Both are essential for maintaining precision equipment.

Calibration frequency depends on machine usage, criticality, and manufacturer recommendations. High-precision or heavily-used machines may need quarterly or semi-annual calibration, while others perform well with annual service. New machines should be verified while under warranty. We recommend establishing a baseline, then adjusting frequency based on your quality requirements, production demands, and observed machine stability.

NIST traceability means calibration measurements are compared to standards maintained by the National Institute of Standards and Technology through an unbroken chain of documented comparisons. It matters because it provides legal defensibility, satisfies quality system requirements (ISO, AS9100), and gives you confidence that measurements are accurate and recognized nationally and internationally. Our measurements exceed the required 10:1 accuracy ratio.

Yes, and we strongly recommend it. Warranty-period calibration verifies that new machines meet manufacturer specifications before the coverage expires. Shipping and installation often introduce alignment errors or hidden damage that affect accuracy. Early verification identifies these issues while you can still hold the manufacturer accountable, protecting your investment and preventing production problems down the line.

We primarily serve Portland OR and SW Washington with faster response times than out-of-area providers. Our local presence means we can respond quickly to urgent calibration needs, warranty verifications, or troubleshooting support. We also provide service to customers outside these areas, though response times may be longer. Contact us to discuss your specific location and service requirements.

Service duration varies by equipment size and testing scope. Ballbar testing typically takes 1-2 hours for a quick health check. Complete laser interferometer calibration of all axes on a mid-size machine usually requires 4-8 hours. Large machines with multiple rotary axes may need a full day or more. We work efficiently to minimize your downtime and can often schedule service during planned maintenance windows or off-shifts.

You receive a comprehensive calibration report documenting all measurements, deviations from nominal, pass/fail status against your specifications, and NIST traceability information. Reports include detailed graphs, error plots, and clear data interpretation. This documentation satisfies quality system audits, supports warranty claims, aids troubleshooting, and provides a baseline for tracking machine performance over time. All data is presented in formats compatible with machine tool controllers and quality management systems.