Maintain precision measurement accuracy with professional granite surface plate calibration, leveling, and reconditioning services. Our NIST-traceable verification ensures your surface plates provide reliable reference planes for inspection and layout work, preventing costly measurement errors and maintaining production quality standards across your facility.
Comprehensive calibration, leveling, and reconditioning solutions to maintain your surface plates as accurate reference standards.
Precise flatness measurement using Moody Plot analysis to ensure your surface plate meets specified tolerances. We evaluate surface plate condition and verify it continues providing an accurate reference plane for critical inspection and layout operations.
Professional leveling services using precision electronic levels to correct pitch and roll errors. Proper leveling maintains measurement consistency and ensures your surface plate provides a stable, accurate reference for dimensional verification work.
Complete reconditioning services to restore worn surface plates to specified flatness standards. As plates wear over time, reconditioning extends their service life while maintaining the accuracy needed for reliable inspection results.
Full NIST-traceable calibration certificates documenting flatness, levelness, and measurement uncertainty. Our traceable documentation supports quality system requirements and provides proof of measurement capability for customer audits.
Scheduled evaluation programs to monitor surface plate condition before accuracy degradation affects production. Regular monitoring maintains consistency, prevents measurement errors, and helps plan reconditioning before problems impact quality.
Professional re-leveling and verification services following surface plate relocation or facility moves. We ensure proper installation and confirm accuracy after any movement that could affect plate geometry or support structure.
Surface plate accuracy directly impacts every measurement made on it. Our comprehensive calibration services use precision measurement techniques traceable to NIST standards, ensuring your surface plates continue providing the reliable reference planes your inspection operations demand. We evaluate wear patterns, verify flatness across the entire surface, and provide detailed documentation that supports quality system requirements while giving you confidence in every measurement made.
Leading manufacturers rely on our precision calibration services to maintain measurement accuracy and production quality.
"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"
"This guy knows his stuff. Would definately recommend! Friendly good people!"
"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..."
"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"
"This guy knows his stuff. Would definately recommend! Friendly good people!"
"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..."
"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"
"This guy knows his stuff. Would definately recommend! Friendly good people!"
"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..."
Built on a foundation of precision measurement expertise and real-world manufacturing experience.
All measurements traceable to NIST and International Standards, exceeding the 10:1 ratio required for proper calibration documentation.
Founded by a former machine operator, we understand how surface plate accuracy affects production operations and provide solutions that minimize disruption.
Serving Portland OR and SW Washington with faster response times than out-of-area providers, keeping your equipment downtime to a minimum.
Beyond basic calibration, we evaluate surface plate condition and recommend maintenance strategies that prevent unexpected accuracy problems.
Experienced calibration professionals dedicated to measurement accuracy.
Founder
Larry founded Sarkinen Calibrating after years of hands-on experience as a machine operator, giving him a unique perspective on calibration services. For Larry, calibration has always been more than just equipment maintenance—it's about understanding how measurement accuracy affects production quality and efficiency. His operator background means he approaches every calibration job with an understanding of how surface plate accuracy impacts real-world machining operations. Larry built Sarkinen Calibrating on the principle that precision measurement should support production goals, not just meet regulatory requirements. His experience allows him to provide practical solutions that help manufacturers maintain accuracy while minimizing downtime. Larry's hands-on approach and commitment to customer service have made Sarkinen Calibrating the trusted calibration provider for manufacturers throughout Portland OR and SW Washington who need reliable, responsive measurement services that keep production running smoothly.
How often should granite surface plates be calibrated?
Calibration frequency depends on usage intensity, but most manufacturers calibrate annually. High-use plates in production environments may need semi-annual or quarterly verification to ensure continued accuracy. We can help establish an appropriate schedule based on your specific usage patterns and quality requirements.
What is a Moody Plot and why is it important?
Can worn surface plates be restored to original accuracy?
What causes surface plates to lose accuracy over time?
Are your calibration services traceable to NIST?
How long does surface plate calibration take?
What happens if my surface plate fails calibration?
Do you service surface plates at our facility or is removal required?
Talk to our calibration experts about your specific measurement needs and accuracy requirements.
Fast, responsive calibration services throughout our primary service area with capability to support customers beyond.
Portland & SW WA
Primary Service Area
Faster Than Out-of-Area
Response Time
5.0 Stars
Customer Rating
Contact us to confirm service availability and schedule your surface plate calibration.
All calibrations traceable to national standards
Top-rated precision calibration service
Accuracy to 1.0 parts per million
Contact us today to discuss your calibration needs and schedule service. We'll work with your production schedule to minimize downtime.
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