Precision CNC calibration services delivering NIST-traceable accuracy to one millionth of an inch. From laser interferometry to ballbar testing, we verify machine performance, identify wear before it impacts production, and eliminate unexpected downtime. Our comprehensive diagnostics ensure your equipment operates at peak accuracy, helping you maintain tight tolerances and deliver consistent quality every time.
Complete measurement solutions ensuring your CNC machines deliver consistent accuracy and reliability.
Verify positioning accuracy to 1.0 parts per million using laser interferometry. Measure accuracy, repeatability, straightness, and squareness across full axis travel with NIST-traceable results that exceed the 10:1 ratio required for proper calibration.
Quick evaluation of machine condition using Renishaw QC20-W Ballbar. Identify backlash, servo mismatch, axis reversal errors, and squareness problems. Perfect for validating service work and monitoring overall machine health with minimal downtime.
Measure angular positioning accuracy, repeatability, and alignment of rotary tables and trunnions. Verify proper installation and identify mechanical wear, setup errors, or encoder issues affecting multi-axis machining precision.
Maintain reference plane accuracy through expert leveling and flatness verification using Moody Plot measurement. Evaluate surface plate condition to ensure consistent inspection results and prevent accuracy drift from wear over time.
Identify and correct pitch and roll errors using precision electronic levels. Evaluate machine beds, guideways, and large structures where angular deviations affect accuracy. Ideal for post-installation verification and foundation assessment.
Hands-on training for laser interferometry, ballbar systems, and CNC machine operation. Learn proper setup, data interpretation, and troubleshooting techniques to perform in-house diagnostics and maximize equipment capability.
Initial Assessment & Planning
We evaluate your machine specifications, operational requirements, and measurement objectives. Our team reviews machine history, warranty status, and production accuracy concerns to design a calibration plan tailored to your equipment and manufacturing environment.
Precision Measurement Setup
Comprehensive Data Collection
Analysis & Diagnostics
Reporting & Recommendations
Manufacturing operations across the Pacific Northwest rely on our calibration expertise to maintain precision and eliminate unexpected downtime.
"I have worked with Mr Sarkinen on a job in Portland He is a Highly Skilled, Knowledgable Professional. I would definitely recomend him for all your Machine Tool Calibration Metrics. Sincerely Curtis Page Naughtellis CNC Service"
"As plant manager at Triad, I am always looking for ways of testing and measuring the condition of our large machines. Our outside repair tech suggested that I have Sarkinen Calibrating run their Ball Bar Test on all of our machines to show if we had any critical wear issues..."
"This guy knows his stuff. Would definately recommend! Friendly good people!"
"I have worked with Mr Sarkinen on a job in Portland He is a Highly Skilled, Knowledgable Professional. I would definitely recomend him for all your Machine Tool Calibration Metrics. Sincerely Curtis Page Naughtellis CNC Service"
"As plant manager at Triad, I am always looking for ways of testing and measuring the condition of our large machines. Our outside repair tech suggested that I have Sarkinen Calibrating run their Ball Bar Test on all of our machines to show if we had any critical wear issues..."
"This guy knows his stuff. Would definately recommend! Friendly good people!"
"I have worked with Mr Sarkinen on a job in Portland He is a Highly Skilled, Knowledgable Professional. I would definitely recomend him for all your Machine Tool Calibration Metrics. Sincerely Curtis Page Naughtellis CNC Service"
"As plant manager at Triad, I am always looking for ways of testing and measuring the condition of our large machines. Our outside repair tech suggested that I have Sarkinen Calibrating run their Ball Bar Test on all of our machines to show if we had any critical wear issues..."
"This guy knows his stuff. Would definately recommend! Friendly good people!"
Founded by a former machine operator who understands production realities, we deliver more than equipment maintenance—we provide calibration solutions that increase efficiency and quality.
Accuracy to 1.0 parts per million with measurements exceeding the 10:1 ratio required for proper calibration, fully traceable to NIST and International Standards.
Serving Portland OR and SW Washington with faster response times than out-of-area providers. We understand regional manufacturing needs and deliver highly predictable service with minimal disruption.
Founded by Larry, who started as a machine operator. We approach calibration from a production viewpoint, focusing on solutions that increase quality and eliminate downtime.
Beyond basic calibration, we identify hidden damage, verify warranty specifications, and provide proof your machines can deliver as promised—every single time.
Experience built from the shop floor up.
Founder
Larry brings a unique perspective to precision calibration—one forged on the machine shop floor rather than in a classroom. Starting his career as a machine operator, Larry experienced firsthand the frustration of unexpected downtime, the pressure of maintaining tight tolerances, and the challenge of diagnosing accuracy problems under production deadlines. This hands-on background shapes everything about Sarkinen Calibrating's approach. For Larry, calibration has never been just about equipment maintenance or checking boxes on a compliance form. It's about understanding how machining operations really work, recognizing the early warning signs of trouble, and providing practical solutions that genuinely increase production quality and efficiency. When Larry founded Sarkinen Calibrating, he built it around the principle that calibration should eliminate problems before they impact your production, not just document them afterward. Today, that operator's perspective continues to drive the company's commitment to faster local response times, comprehensive diagnostics that go beyond standard testing, and clear communication that speaks to production realities rather than technical abstractions.
What is CNC calibration?
CNC calibration is the process of verifying and adjusting a machine's positioning accuracy, repeatability, and geometric alignment. Using precision instruments like laser interferometers and ballbar systems, calibration measures how closely the machine's actual movement matches its programmed commands, identifying errors that affect part quality.
How often should you calibrate a CNC machine?
What accuracy level can your calibration achieve?
How long does a typical calibration take?
Can calibration identify why my machine is producing out-of-tolerance parts?
Should I calibrate a new machine even if it's under warranty?
What's the difference between ballbar testing and laser interferometry?
Do you provide calibration services outside Portland and SW Washington?
Speak with our calibration experts to discuss your specific machine accuracy needs and measurement requirements.
Local service for Portland and SW Washington with faster response times than out-of-area providers. Extended service available throughout the Pacific Northwest.
Portland & SW WA
Primary Service Area
5.0 Stars
Customer Rating
Same Week
Response Time
Contact us to discuss calibration service for your location and equipment. We provide faster response times in our primary service area.
All measurements traceable to NIST standards
Perfect customer satisfaction on Google
Renishaw-certified measurement systems
Get started with precision calibration that eliminates unexpected downtime. We'll respond quickly to discuss your machine accuracy needs and schedule service at your convenience.
For immediate assistance, feel free to give us a direct call at (360) 907-3058 You can also send us a quick email at
For immediate assistance, feel free to give us a direct call at (360) 907-3058 You can also send us a quick email at