Zeiss CMM Inspection Services — Precision Dimensional Metrology
Third-axis dimensional verification and first article inspection on a Zeiss coordinate measuring machine — providing traceable, documented measurement data for precision plastic and metal parts.
Delivering a part to dimensional specification is not the same as proving it. Customers in aerospace, defense, medical, and precision manufacturing require documented, traceable measurement data confirming that every critical dimension meets the drawing — not a visual check, not a spot measurement with handheld gauges, but a full-featured CMM inspection report that traces every measured feature back to a calibrated reference.
Plastic-Craft’s Zeiss CMM provides exactly this capability — precise, documented, traceable dimensional inspection for complex plastic and metal parts, supporting first article inspections (FAI), in-process verification, and final acceptance inspection.
What Is CMM Inspection?
A coordinate measuring machine (CMM) is a precision metrology instrument that measures the geometry of physical parts by probing their surface at discrete points and calculating dimensions, angles, profiles, and geometric tolerances from those point measurements. The Zeiss CMM at Plastic-Craft is equipped with a precision touch-trigger probing system that captures three-dimensional point coordinates with micrometer-level accuracy.
Unlike handheld gauges and manual inspection methods, CMM inspection provides:
- Full-featured measurement of complex three-dimensional geometry including profiles, bores, planes, and angular features that cannot be reliably measured by hand
- Traceable documentation — every measurement is recorded and reported against the nominal drawing dimension, with actual vs. nominal comparison
- GD&T compliance verification — true position, flatness, circularity, parallelism, perpendicularity, runout, and other geometric tolerances can be measured and reported
- Calibration traceability — the CMM is calibrated against NIST-traceable standards, providing a documented measurement chain required for regulated industries
Why Zeiss?
Zeiss (Carl Zeiss Industrial Metrology) is widely recognized as one of the world’s leading manufacturers of coordinate measuring machines. Zeiss CMMs are standard metrology equipment in aerospace, automotive, defense, and medical manufacturing — their accuracy, repeatability, and software capabilities set the benchmark against which other CMM systems are often compared.
Having a Zeiss CMM in-house — rather than outsourcing inspection to a third-party metrology lab — means shorter inspection turnaround, direct integration between our fabrication and quality teams, and the ability to inspect parts at every stage of the manufacturing process rather than only at final delivery.
Our CMM Inspection Capabilities
First Article Inspection (FAI / FAIR)
Full-feature dimensional inspection of the first article from a new program, documented to AS9102 or customer-specific FAI requirements.
In-Process Inspection
Measurement of critical features during production to verify dimensions before continuing to the next operation.
Final Acceptance Inspection
Complete dimensional verification before shipment, ensuring every critical feature meets drawing specification.
GD&T Feature Measurement
True position, flatness, roundness, cylindricity, parallelism, perpendicularity, angularity, profile of a surface, runout, and total runout.
Complex Profile Measurement
Three-dimensional profile scanning for thermoformed, molded, and machined complex geometry.
Reverse Engineering
Dimensional capture of physical parts for CAD reconstruction or tolerance documentation.
Inspection Reports
Formatted inspection reports with actual vs. nominal comparison, tolerance status, and measurement uncertainty documentation. Available in AS9102 and customer-specific formats.
Materials We Inspect
The Zeiss CMM inspects parts regardless of material. All 21 plastics in our portfolio plus metal parts fabricated in our facility are candidates for CMM inspection.
Some soft or flexible materials require fixturing considerations to ensure dimensional stability during measurement — our quality team manages this for each material.
APPLICATIONS
Applications
- Aerospace and defense parts — AS9102 First Article Inspection Reports for safety-critical and structural components
- Medical device components — Dimensional verification to drawing for regulated device components
- Precision machined plastic — Verification of tight-tolerance features in engineering plastic machined parts
- Injection molded parts — First article and in-process inspection of critical molded features
- Thermoformed parts — Profile and dimensional verification of formed three-dimensional shapes
- Metal fabrications — Hole pattern location, angular, and profile verification on structural metal parts
Frequently Asked Questions About CMM Inspection
CMM inspection uses a coordinate measuring machine to measure the three-dimensional geometry of a physical part by probing its surfaces at precise locations. The measured coordinates are compared to the nominal drawing dimensions to verify that each feature is within tolerance. CMM inspection provides documented, traceable measurement data — far more comprehensive and defensible than manual gauge inspection.
A First Article Inspection is a documented, full-feature dimensional inspection of the first part or assembly produced from a new program, tooling setup, or manufacturing process. The FAI confirms that the manufacturing process is capable of producing parts to drawing specification before volume production begins. FAI is required by aerospace (AS9102), defense, and many industrial customers as a condition of production approval. Plastic-Craft provides FAI reports to AS9102 and customer-specific formats.
Our Zeiss CMM can measure and report all standard GD&T tolerances including: true position (holes, bosses, and features of size), flatness, roundness, cylindricity, parallelism, perpendicularity, angularity, profile of a surface, circular runout, and total runout. Composite position tolerances and datum reference frame measurements are also supported.
Zeiss CMMs achieve volumetric measurement accuracies in the range of ±1–3 micrometers (0.00004" – 0.00012") under controlled conditions, depending on the machine model and probe configuration. For typical plastic and metal fabrication work with tolerances in the ±0.001" to ±0.010" range, the CMM measurement uncertainty is negligible relative to the tolerance band. Our CMM is calibrated regularly to NIST-traceable standards.
Yes. Inspection reports are provided as standard deliverables for FAI programs, and are available for production inspection runs on request. Reports include nominal dimension, actual measured dimension, deviation, tolerance, and pass/fail status for every measured feature. Reports can be formatted to customer-specific templates or standard formats such as AS9102 FAI reporting.
Resources & Guides
Guides and articles on inspection, metrology, and quality assurance.
GUIDE
Understanding CMM Inspection: A Buyer's Guide
What CMM inspection is, when you need it, and what to expect from an inspection report.
BLOG
First Article Inspection: What It Is and Why It Matters
How FAI prevents production problems and why AS9102 compliance matters beyond aerospace.
BLOG
GD&T Explained: Geometric Tolerancing for Machined Parts
A practical overview of GD&T symbols and how they translate to CMM measurement.
Request CMM Inspection Services
Share your part drawing, measurement requirements, and inspection scope and we’ll provide pricing and lead time for your inspection program.