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Comprehensive Machine Tool Calibration & Accuracy Testing Services

When your production accuracy matters, Sarkinen Calibrating delivers NIST-traceable precision calibration and testing services that eliminate unexpected downtime and ensure consistent quality. Our comprehensive machine tool calibration verifies positioning accuracy to 1.0 parts per million, identifies wear before it impacts production, and proves your equipment delivers as promised—every time.

Precision laser interferometer measuring CNC machine axis accuracy in manufacturing facility

Our Machine Tool Calibration Services

Complete precision calibration solutions from NIST-traceable linear measurement to ballbar testing, ensuring your equipment delivers consistent accuracy.

Linear Calibration

Verify positioning accuracy, repeatability, straightness, and squareness across full axis travel using Renishaw's Laser Interferometer with accuracy to 1.0 parts per million. NIST-traceable measurements identify alignment errors and hidden damage before warranty expires.

Ballbar Testing

Fast machine health evaluation using Renishaw's QC20-W Ballbar to assess circularity, identify backlash, servo mismatch, axis reversal errors, and squareness problems. Validates recent service work and supports maintenance planning with minimal downtime.

Rotary Axis Calibration

Measure angular positioning accuracy, repeatability, and alignment of rotary tables and trunnions using Renishaw's Rotary Calibration System. Identifies mechanical wear, setup errors, and encoder issues affecting multi-axis machining precision.

Surface Plate Verification

Expert leveling and flatness verification including Moody Plot analysis to maintain accurate reference planes for inspection and layout work. Monitors wear over time to preserve part accuracy and measurement reliability in production environments.

Electronic Leveling

Identify and correct pitch and roll errors in machine beds, guideways, and large structures using Mahr-Federal's Electronic Level. Detects angular deviations from installation, relocation, or foundation movement that affect axis geometry and machining stability.

Calibration Training

Hands-on instruction for Renishaw's Laser Interferometer and QC20-W Ballbar systems, plus CAM software and CNC operation training. Tailored sessions help teams perform in-house diagnostics, interpret results, and maximize machine capability.

NIST-Traceable Precision

Built For Accuracy: Precision Calibration That Protects Your Production

Manufacturing facilities throughout Portland and SW Washington trust Sarkinen Calibrating because we deliver more than equipment checks—we provide production confidence. Our NIST-traceable measurements exceed the required 10:1 calibration ratio, identifying issues before they impact part quality. Whether verifying new machine warranties, troubleshooting accuracy problems, or establishing predictable maintenance schedules, our comprehensive approach minimizes disruption while maximizing uptime. With faster local response times and expertise rooted in machine operation experience, we understand what precision really means on the shop floor.

Calibration technician conducting precision measurement on CNC machine tool
Proven Results

Trusted by Leading Manufacturers

See how precision calibration has helped manufacturers maintain quality 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"

fab c
fab c

"This guy knows his stuff. Would definately recommend! Friendly good people!"

Lucas Pukas
Lucas Pukas

"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..."

Mike Mills

"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"

fab c
fab c

"This guy knows his stuff. Would definately recommend! Friendly good people!"

Lucas Pukas
Lucas Pukas

"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..."

Mike Mills

"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"

fab c
fab c

"This guy knows his stuff. Would definately recommend! Friendly good people!"

Lucas Pukas
Lucas Pukas

"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..."

Mike Mills
The Sarkinen Difference

Why Choose Sarkinen Calibrating?

Experience the difference that local expertise and machine operator perspective brings to precision calibration.

Local Expertise

Faster response times throughout Portland and SW Washington than out-of-area providers, minimizing your downtime.

NIST Traceable

Measurements to 1.0 parts per million, fully traceable to NIST and International Standards for complete confidence.

Operator Experience

Founded by a machine operator who understands production realities, not just equipment specifications and technical data.

Comprehensive Solutions

Complete calibration services from linear measurement to training, ensuring highly predictable operation with minimal disruption.

Meet the Sarkinen Team

Led by experience. Driven by precision. Committed to your success.

Larry, Founder of Sarkinen Calibrating

Larry

Founder

Larry's journey from machine operator to calibration service founder gives him a unique perspective that goes far beyond equipment maintenance. Having operated CNC machines firsthand, he understands the real-world production challenges manufacturers face daily—the frustration of unexpected downtime, the cost of scrap from axis errors, and the pressure to maintain tight tolerances. This operator-level experience drives his approach to calibration: it's not just about verifying numbers, it's about delivering solutions that genuinely increase production quality and efficiency. Larry built Sarkinen Calibrating on the principle that precision calibration should eliminate problems before they disrupt operations, providing manufacturers with the confidence that their equipment will perform exactly as promised. His hands-on background means he approaches every calibration with practical insight into how machine accuracy directly impacts your production floor, helping you achieve highly predictable operation with minimal disruption.

Frequently Asked Questions

What is tooling calibration?

Tooling calibration, also known as machine tool calibration, is the process of verifying and documenting the positioning accuracy, repeatability, straightness, and squareness of machine tools like CNC machines. Using precision measurement equipment such as laser interferometers and ballbar systems, calibration identifies deviations from specifications and provides NIST-traceable documentation that proves equipment performs within required tolerances for quality production.

How often should CNC machines be calibrated?

What is NIST-traceable calibration and why does it matter?

How long does machine tool calibration take?

Can you calibrate machines while they're still under warranty?

What's included in a laser interferometer calibration?

How does ballbar testing differ from laser calibration?

What areas do you serve for calibration services?

Calibration Services Throughout the Pacific Northwest

Local service with faster response times for Portland OR and SW Washington, with capabilities to serve customers beyond.

Portland & SW WA

Primary Service Area

5.0 Stars

Customer Rating

1.0 PPM

Measurement Accuracy

Do We Service Your Manufacturing Facility?

Contact us to confirm service availability and discuss faster response times for your location.

Certified & Trusted

Awards and Recognition

NIST traceability certification logo

NIST Traceability

All measurements traceable to NIST standards

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5-Star Rating

Perfect customer satisfaction on Google

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Precision Verified

Accuracy to 1.0 parts per million

Ready to Eliminate Unexpected Downtime?

Contact us today to schedule calibration service or discuss how we can help maintain your equipment precision.

Contact Us Today

For immediate assistance, feel free to give us a direct call at (360) 907-3058.