Metrology Services for Precision Engineering
Industry-leading metrology solutions for cast and machined components, ensuring dimensional accuracy, integrity, and performance.
We use metrology inspection solutions to improve quality, accelerate delivery, and reduce waste to guarantee the best results from the inside out.
Our integrated approach to metrology services delivers reliable component validation, dimensional verification, and data-led process control to meet the most demanding engineering specifications.
Expert-led metrology services that reduce risk, improve process control, and drive better component performance.
Embedded Metrology Inspection for High-Performance Components
With a full suite of industry-leading inspection technologies, we deliver precision and repeatability at every stage, perfect for sectors where accuracy and reliability can’t be compromised.
Our advanced metrology capabilities include:
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8x Coordinate Measuring Machines (CMMs) for external dimensional verification, including the Global S Chrome CMM with X1H analogue scanning head for ultra-precise surface measurement and intricate geometries.
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7x CMMs running PC-DMIS and 1x with Quindos software, ideal for critical dimension metrology, including complex features like guides, seats, and bores.
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4x 3D laser scanners, used both in our metrology labs and on the shop floor for real-time inline inspection and process feedback.
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3x Yxlon CT scanners, combined with VG Elements software, allow for in-depth porosity evaluation, wall thickness analysis, and defect detection.
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Endoscopic inspection in our PDI (Pre-Delivery Inspection) areas for detailed internal validation, ensuring casting integrity before final assembly.
By embedding these systems across both prototyping and production, we reduce lead times and enable consistent, high-accuracy validation at every stage.
CT Scanning for Non-Destructive Testing and Internal Validation
Our Yxlon CT scanners, paired with powerful VG Elements software, provide non-contact metrology solutions for high-integrity component analysis and:
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Porosity detection and mapping
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Wall thickness analysis
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Early-stage defect identification before machining
These non-destructive testing capabilities ensure each component meets stringent quality standards before any material is removed, minimising waste and protecting structural integrity.

Why Choose Grainger & Worrall for Metrology?
We go beyond measurement, our integrated metrology services enhance manufacturing performance through early intervention, data-led decision-making, and continuous improvement.
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1. Uncompromising Dimensional Accuracy
Every component is validated against CAD models and engineering requirements using cutting-edge metrology inspection tools, ensuring absolute confidence in quality. A rapid validation of digital process models with real-world, physical data, means we’re able to support the quick development and production of new products with confidence.
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2. Process Efficiency and Waste Reduction
By quickly identifying internal and external defects before they reach downstream operations, we reduce scrappage, rework, and machining time, streamlining your workflow.
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3. Real-Time Data for Continuous Improvement
Inspection insights feed directly into our production environment, helping you refine processes, maintain consistency and accelerate delivery times.
Frequently Asked Questions
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What is metrology in engineering and manufacturing?
Metrology is the science of measurement, applied to ensure precision and dimensional accuracy in manufactured components. At Grainger & Worrall, metrology is built into every phase of production, supporting better outcomes from casting to final machining.
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Why is dimensional verification critical in casting and machining?
Without accurate metrology inspection, faults can go unnoticed until late-stage production, causing delays, rework or failures in critical environments. Our services catch defects early and validate every detail.
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How do you inspect internal structures without damaging the component?
We use advanced CT scanning and endoscopy for non-destructive internal validation, allowing us to identify internal flaws, porosity and wall thickness variances without cutting or machining the part.
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Do you support component validation on low volumes or prototypes?
Yes – our metrology solutions are scalable, from one-off prototypes to high-volume production runs. We provide dimensional reporting, validation and feedback to accelerate development and ensure confidence at every stage.
Drive Better Outcomes with Precision Metrology from Grainger & Worrall
From cast geometry and machined tolerances to non-destructive testing and inline inspection, our metrology specialists ensure your components meet exacting standards, every time.
Innovation meets Quality
Grainger and Worrall are passionate about innovation and quality. It impacts everything we do. Whether it's innovating with rapid prototyping, or driving lightweighting for lighter, more durable F1 engines, we make sure each and every part is fit-for-purpose and meets the quality specifications our customers expect. But don't just take our word for it, check out our accreditations below.






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