Expert Precision Testing Services for Comprehensive Validation

Precision in testing refers to the consistency and repeatability of measurements. A precise testing system produces the same result when measuring the same item multiple times under identical conditions. In machine calibration, precision testing verifies that equipment can repeatedly position to the same location within extremely tight tolerances—often to one millionth of an inch—ensuring consistent part quality across production runs.

Accuracy measures how close a measurement is to the true value, while precision measures how consistently you can reproduce that measurement. A testing system can be precise (giving the same result repeatedly) without being accurate (if those results are consistently wrong). The best testing services, like those using NIST-traceable standards, deliver both high precision and high accuracy, ensuring measurements are both consistent and correct.

In medical laboratories, precision refers to the reproducibility of test results when the same sample is analyzed multiple times. While medical lab precision focuses on biological samples and diagnostic accuracy, the fundamental principle is identical to manufacturing calibration: measurements must be repeatable and consistent to be trustworthy. Both fields require traceable standards and rigorous verification protocols to ensure reliable results.

Testing frequency depends on equipment usage, part tolerances, and production criticality. Many manufacturers perform annual calibration, but high-volume operations or tight-tolerance work may require quarterly or semi-annual testing. New equipment should be verified immediately after installation to catch shipping damage while under warranty. Consider testing after machine relocation, major repairs, or when part quality issues arise.

NIST traceability requires measurement equipment to be at least 10 times more accurate than the item being tested (a 10:1 ratio). Sarkinen Calibrating's laser interferometry achieves accuracy to 1.0 parts per million, well exceeding this requirement. This means when testing a machine accurate to 0.001 inches, our measurement system is accurate to 0.0000001 inches, providing confidence in results.

Yes. Precision testing systematically evaluates positioning accuracy, repeatability, straightness, squareness, and other machine characteristics that directly affect part geometry. Testing reveals specific issues like backlash, servo mismatch, thermal drift, or alignment problems. The detailed analysis identifies root causes and quantifies their impact, allowing targeted corrections rather than guessing at solutions.

Testing duration varies by machine size and complexity. A basic three-axis machine typically requires 4-6 hours for comprehensive laser interferometry. Ballbar testing is faster, often completed in 1-2 hours, making it ideal for routine monitoring. Multi-axis machines with rotary components require additional time. Wireless equipment and efficient setup procedures minimize disruption to your production schedule.

Yes. While we're based in Portland OR and SW Washington with faster response times for local customers, we also provide precision testing services for customers outside our primary service area. If you're located elsewhere and need NIST-traceable calibration services, contact us to discuss your specific requirements and schedule testing that minimizes travel time and meets your operational needs.