Ensure your inspection and layout work remains accurate with professional surface plate flatness testing. At Sarkinen Calibrating, we provide expert leveling and flatness verification using Moody Plot analysis to evaluate surface plate condition and maintain reliable reference planes. As surface plates wear through daily use, even minor deviations can compromise measurement integrity and part accuracy in your production environment. Our NIST-traceable testing identifies wear patterns before they impact your quality control processes, giving you confidence in every inspection result.
Comprehensive calibration solutions maintaining measurement accuracy and reliability across all your precision equipment and machine tools.
Expert leveling and flatness verification using Moody Plot analysis to maintain accurate reference planes. We evaluate surface plate condition to ensure consistent inspection results and identify wear before it impacts part accuracy.
Precision linear calibration using Renishaw Laser Interferometer with accuracy to 1.0 part per million. NIST-traceable measurements verify positioning accuracy, repeatability, straightness, and squareness across full axis travel.
Comprehensive rotary axis accuracy determination using Renishaw's Rotary Calibration System. We measure angular positioning, repeatability, and alignment to identify mechanical wear, setup errors, or encoder issues affecting multi-axis machining.
Fast machine health assessment using Renishaw QC20-W Ballbar to evaluate circularity and identify backlash, servo mismatch, reversal errors, and squareness problems. Wireless setup minimizes downtime while validating machine condition.
Precision pitch and roll error detection using Mahr-Federal Electronic Level. Ideal for evaluating machine beds, guideways, and large structures where angular deviations affect accuracy and identifying alignment issues from installation or foundation movement.
Hands-on instruction for CAM software, CNC operation, and Renishaw measurement systems. Tailored training helps operators, programmers, and technicians improve efficiency, understand machine accuracy data, and perform in-house diagnostics.
Surface plates serve as the foundation for precision inspection and layout operations, but their accuracy degrades with use. Our flatness testing service uses advanced Moody Plot methodology to map surface variations and evaluate overall plate condition against industry standards. With measurements traceable to NIST and International Standards, we provide documented proof of your reference plane accuracy. Whether you're validating new equipment, maintaining production standards, or troubleshooting quality issues, our local Portland service delivers faster response times than out-of-area providers, minimizing disruption to your inspection workflow and maintaining confidence in every measurement.
Delivering reliable calibration solutions that eliminate unexpected downtime and maintain production quality for Portland-area manufacturers.
"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!"
Built on machine operator experience and precision measurement expertise.
Serving Portland OR and SW Washington with faster response times than out-of-area providers, minimizing your equipment downtime.
Measurements to 1.0 parts per million, fully traceable to NIST and International Standards for documented proof.
Founded by a former machine operator who understands production operations and provides solutions beyond basic maintenance.
Complete calibration services from surface plates to multi-axis machines, eliminating the need for multiple service providers.
Experience built from the shop floor up.
Founder
Larry's journey in precision calibration began on the production floor as a machine operator, giving him a unique perspective that shapes every service Sarkinen Calibrating provides today. He understands firsthand the frustration of unexpected downtime, the pressure of maintaining tight tolerances, and the critical importance of equipment accuracy in meeting production schedules. This hands-on experience drove him to build a calibration service focused not just on equipment maintenance, but on comprehensive solutions that increase production quality and operational efficiency. Larry's operator background means he approaches each calibration project by examining the entire machining operation, identifying potential issues before they become problems, and providing insights that help customers maintain highly predictable operations. His commitment to minimizing disruption while maximizing accuracy has made Sarkinen Calibrating the trusted partner for manufacturing facilities throughout the Portland and SW Washington area. When Larry arrives on-site, customers know they're working with someone who truly understands their challenges and has the technical expertise to deliver solutions that work.
How often should surface plates be tested for flatness?
The frequency depends on usage intensity and accuracy requirements. High-volume inspection environments typically require annual testing, while lighter-use plates may be tested every 2-3 years. We recommend testing whenever accuracy concerns arise, after relocation, or as part of ISO 9001 compliance programs.
What is a Moody Plot and why is it important?
Can worn surface plates be restored or do they need replacement?
How long does surface plate flatness testing take?
What documentation do you provide after testing?
Do you service surface plates outside Portland and SW Washington?
What causes surface plates to lose flatness over time?
Can you verify flatness on-site or must plates be sent out?
Our calibration experts are ready to discuss your specific testing needs and schedule a convenient service appointment.
Local calibration expertise with faster response times for manufacturing facilities throughout the greater Portland area and beyond.
Portland & SW WA
Primary Service Area
5.0 Stars
Customer Rating
Faster Local Service
Response Time
We serve Portland, SW Washington, 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
Renishaw and Mahr-Federal certified systems
Contact us today to schedule flatness testing or discuss your calibration needs. We'll respond promptly with scheduling options and pricing information.
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