Metrology Excellence

Inspection & Metrology Fixtures & Jigs

Make measurement repeatable—so decisions are defensible. We build reference systems that eliminate “opinion-based” inspection and ensure cross-site correlation.

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GD&T Driven

When Measurement Turns into Conflict

In inspection, the biggest error source is often not the machine—it’s the way the part is held. If different people clamp the same part differently, you don’t have measurement; you have opinions.

Site Mismatch

Supplier and customer data don’t align.

CMM Failure

One machine passes, another fails the same part.

Clamp Drift

Parts fail only after re-clamping/positioning.

Bad GR&R

Gage R&R fails due to inconsistent part posture.

Metrology Fixture Non-Negotiables

A proper inspection fixture is not “a clamp.” It is a measurement reference system. We build fixtures that ensure part posture is controlled every single cycle.

Repeatable posture every cycle
Degrees of freedom control without distortion
GD&T-driven inspection strategy
Loading without human interpretation

Correlation Focused

We design for correlation by aligning fixture datums to your inspection plan and making posture repeatable: Seat first, constrain second.

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Inspection & Metrology Fixtures We Build

CMM Fixtures

Probe access & Datum Integrity

Built around datum integrity so your CMM measures what matters without re-clamping or probe obstruction.

• Stable seating
• Minimal occlusion
• Replaceable contacts
• GD&T aligned

Checking Jigs

Attribute & Gauge Fixtures

When production needs a fast pass/fail decision without ambiguity. High cycle count durability.

• Go/No-Go checks
• Poka-yoke layout
• Fast load/unload
• Hardened wear faces

Vision Fixtures

Optical Posture Control

Orientation and lighting consistency. Reduced reflections and unwanted silhouette occlusions.

• Lighting aware
• Anti-reflection
• Silhouette exposure
• Micron-level tilt control

Functional Test

Fit & Performance

End-of-Line Verification

Verifying how the part behaves (leak checks, motion checks, interface fit) not just how it measures.

• Sealing engagement
• Motion stability
• Acceptance criteria
• Serviceable seals

Reducing Measurement Disputes

If your biggest pain is “we measure different numbers,” we address it directly through engineering, not just machining.

Posture Control

Seat first, constrain second logic ensures every operator loads the part identically.

Distortion Avoidance

Clamping strategies that prevent clamp-induced stress or warp on sensitive parts.

Revision Clarity

Traceable documentation ensures all sites measure the same revision of tooling.

Result: Fewer arguments, faster approvals, and cleaner PPAP / audit conversations.

Audit-Ready Deliverables

Drawings & BOM

Full revision-controlled data.

Wear & Spares

Strategy to maintain long-term precision.

Maintenance SOP

Re-verification notes and steps.

Repeatability Guide

Measurement workflow alignment.

What We Need to Quote & Start

2D Drawings + 3D Model (STEP)

GD&T and Critical Datums

Preferred Measurement Method

Repeatability Expectations

Current Correlation Disputes

Annual Takt/Cycle Time

Stop debating numbers—control the posture.

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Inspection Tooling FAQ

How do you ensure measurement correlation between supplier and customer?

We align fixture datums exactly to your GD&T scheme and use a “Seat First, Constrain Second” logic. This ensures that the part posture is identical across all inspection sites, eliminating mechanical bias.

Can you design fixtures for thin-wall parts that deform easily?

Yes. We use specialized support mapping and controlled-force clamping (or vacuum holding) to control degrees of freedom without inducing any parasitic stress or deformation that could skew results.

How do you handle probe access in CMM fixtures?

Our designs prioritize probe accessibility paths. We minimize the footprint of clamps and locating features to ensure that all critical surfaces can be reached in a single setup without re-clamping.

Do you provide re-verification and maintenance guidance?

Every metrology fixture includes maintenance notes and a spares strategy. We also provide guidance on how to periodically re-verify the fixture’s precision to ensure audit compliance.

Defensible Decisions

Stop debating numbers and start controlling the posture. Send us your drawing and inspection method for a detailed correlation strategy review.

Metrology Support

info@rapidaccu.com

Global Inspection

Precision manufacturing for quality hubs worldwide.

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