Keep your CNC machines running at peak performance with precision calibration services traceable to NIST standards. From laser interferometry to ballbar testing, we deliver accuracy to 1.0 parts per million while minimizing downtime. Founded by a former machine operator, we understand production realities and provide solutions that increase quality, eliminate unexpected failures, and verify your equipment delivers as promised—every time.
Comprehensive precision calibration solutions from linear accuracy verification to rotary axis testing, all NIST-traceable and designed to minimize production disruption.
Verify positioning accuracy, repeatability, straightness, and squareness across full axis travel using Renishaw Laser Interferometer. Achieve accuracy to 1.0 parts per million with NIST-traceable measurements that identify installation errors and hidden damage before warranty expires.
Quickly evaluate machine health using Renishaw QC20-W Ballbar to assess circularity and identify backlash, servo mismatch, reversal errors, and squareness problems. Wireless setup minimizes downtime while validating recent service work and supporting maintenance planning.
Measure angular positioning accuracy, repeatability, and alignment of rotary tables and trunnions using Renishaw's Rotary Calibration System. Identify mechanical wear, setup errors, or encoder issues affecting multi-axis machining performance.
Detect and correct pitch and roll errors on machine beds, guideways, and large structures using Mahr-Federal Electronic Level. Identify alignment issues from installation, relocation, or foundation movement that compromise axis geometry.
Maintain reference plane accuracy through expert leveling and flatness verification using Moody Plot analysis. Prevent measurement reliability issues caused by surface plate wear that can significantly impact part accuracy over time.
Hands-on training covering CAM software, CNC operation, Renishaw calibration equipment, and how machine geometry affects part quality. Tailored sessions help operators, programmers, and technicians maximize machine capability and reduce errors.
Unlike typical calibration services, Sarkinen Calibrating was founded by Larry, a former machine operator who built this business from the shop floor up. We don't just check equipment—we deliver solutions that increase production quality and efficiency while eliminating the unexpected downtime that disrupts your operations. Every measurement achieves accuracy to 1.0 parts per million, fully traceable to NIST standards, giving you documented proof that your machines deliver as promised, every time.
Manufacturing facilities across the region rely on our calibration expertise to maintain production quality and equipment reliability.
"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!"
We combine precision measurement with real-world production understanding to keep your operations running smoothly.
Serving Portland OR and SW Washington with faster response times than out-of-area providers, minimizing production disruption.
Measurements to 1.0 parts per million, exceeding the 10:1 ratio required for proper calibration with full traceability documentation.
Founded by a machine operator who understands that calibration isn't just maintenance—it's about solutions that increase efficiency and quality.
From laser interferometry to ballbar testing, we identify errors and damage before they become costly production problems.
Built by a machine operator for machine operators.
Founder
Larry didn't start in a calibration lab—he started on the production floor as a machine operator. That hands-on experience shapes everything about Sarkinen Calibrating today. For Larry, calibration has never been just about checking equipment specifications or running tests. It's about understanding the real challenges manufacturing facilities face every day: unexpected downtime, quality issues that appear without warning, and the pressure to keep production moving efficiently. That operator's perspective led him to build a calibration service focused on delivering practical solutions rather than just measurements. He knows what it's like when a machine suddenly produces out-of-spec parts, when a new installation doesn't perform as promised, or when equipment behavior becomes unpredictable. His approach combines precision NIST-traceable measurements with a deep understanding of how machine accuracy directly impacts production quality, efficiency, and your bottom line. Larry built Sarkinen Calibrating to provide the kind of service he wished he'd had as an operator—responsive, reliable, and focused on keeping machines running right.
What is basic maintenance in a CNC machine?
Basic CNC machine maintenance includes daily cleaning of chips and debris, lubrication of moving components, inspection of coolant levels, checking tool wear, and verifying that axes move smoothly. Beyond these routine tasks, periodic calibration ensures positioning accuracy, straightness, and squareness remain within specification. Regular ballbar testing and laser interferometer measurements identify wear patterns and alignment issues before they affect part quality.
What is a CNC maintenance technician?
How often should CNC machines be calibrated?
What is laser interferometer calibration?
What is ballbar testing and why is it important?
Can you calibrate machines outside the Portland area?
What accuracy can I expect from your calibration services?
Do you provide training on calibration equipment?
Talk to someone who's been in your shoes—schedule a consultation to discuss your specific calibration needs.
Local calibration service delivering faster response times and minimizing production disruption across the Pacific Northwest manufacturing region.
Portland Region
Primary Service Area
Local Provider
Response Advantage
5.0 Stars
Customer Rating
We serve the greater Portland region and can accommodate out-of-area requests. Contact us to discuss your location.
All measurements traceable to national standards
Perfect customer satisfaction rating on Google
Measurements meet international calibration standards
Schedule your calibration service today. We'll respond quickly and work around your production schedule to minimize disruption.
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