How Does Contract Inspection Help When You Lack the Right Measurement Equipment?

At FD Hurka Metrology, we know that not every manufacturer has every type of precision measurement equipment available in-house. A quality department may be well equipped for routine inspection but still encounter a part that requires a different measuring technology, a larger measurement range, more specialized equipment, or additional inspection capacity. In those situations, contract inspection can provide another option without requiring the company to immediately add a new piece of equipment to its own lab.

Contract inspection allows a manufacturer to outsource dimensional measurement work to a facility that already has suitable inspection equipment. The goal is not to replace a company’s internal quality team. Instead, it can help fill a measurement gap when the equipment available internally does not match the needs of a particular part or project.

At FD Hurka Metrology, our Contract Inspection Lab supports First Article, PPAP, Masters, and Prototype Inspections. We also perform contract programming for CMM Manager and can inspect parts at our main office in Charlotte or, where appropriate, at a customer’s facility.

When Does a Measurement Equipment Gap Become a Problem?

Most manufacturers build their inspection capabilities around the parts they measure most frequently. That makes sense. A company may rely on hand gages, height gages, optical equipment, a CMM, or another system that fits its regular production work.

Problems can arise when a new or unusual inspection need falls outside those capabilities.

A part may contain features that cannot be reached with the available equipment. The required measurement range may exceed the capacity of an existing system. A drawing may call for measurements that are easier to evaluate using another technology. A prototype or first article may also require more comprehensive dimensional inspection than the facility normally performs.

In those situations, contract inspection provides access to additional measurement capabilities without assuming that every unusual project requires an immediate equipment purchase.

Access to Different Types of Measurement Equipment

One of the clearest reasons to use contract inspection is access to equipment that is not currently available in your facility.

Our Contract Inspection Lab lists several types of equipment for dimensional inspection, including:

• Bridge Style CMMs
• Optical Comparators
• Video Comparators
• Vision Systems
• Height Gages
• Surface Plates
• Hand Held Gages
• ULMMs, or Universal Length Measuring Machines

Each measurement technology has different strengths. A CMM may be appropriate for dimensional and geometric evaluation of accessible three-dimensional features. Vision systems and comparators can be useful when visible profiles, edges, and other optical features need to be inspected. Hand gages and height gages remain practical for many straightforward dimensional checks, while a ULMM is designed for specialized length measurement and calibration-related applications.

Having access to several technologies makes it possible to choose an inspection method around the feature being measured rather than forcing every part onto the equipment that happens to be available internally.

Contract Inspection Can Help With First Article Inspection

A First Article Inspection may require a more extensive dimensional review than routine production inspection. When a new part, revised design, or new manufacturing process needs evaluation, the available in-house equipment may not cover every characteristic that must be checked.

This is one area where contract inspection can be useful. Outsourcing some or all of the dimensional inspection work can give the manufacturer access to additional measurement equipment without permanently changing the internal lab for a project that may not recur frequently.

The inspection requirements should still be defined clearly before work begins. Drawings, tolerances, datums, revision levels, and other relevant requirements all help determine the appropriate measurement approach.

Supporting PPAP Measurement Requirements

FD Hurka Metrology also lists PPAP inspections among the work supported by our Contract Inspection Lab.

PPAP-related dimensional requirements can involve detailed verification of part characteristics. If a manufacturer does not have suitable equipment for every required measurement, contract inspection may help fill that gap.

This is especially relevant when the internal quality team can handle most routine measurements but encounters a specific characteristic that requires equipment outside its normal capabilities. Outsourcing that portion of the inspection can be more practical than trying to adapt a tool that was not designed for the measurement.

Prototype Inspection Can Require Different Equipment

Prototype work creates another common measurement challenge. The geometry may be different from established production parts, the manufacturing process may still be changing, and the inspection approach may not yet be standardized.

A prototype may also contain features that existing fixtures or dedicated gages were never designed to measure.

Using contract inspection can provide access to equipment that better matches the prototype geometry while the manufacturer determines what the long-term inspection strategy should look like.

This can also give engineering and quality teams dimensional information they can use when reviewing the prototype before moving further into production. The appropriate measurement technology will depend on the part, drawing, tolerance, and features involved.

What If You Have the Equipment but Not Enough Inspection Capacity?

Lack of equipment is not the only reason manufacturers consider outsourcing inspection work. A facility may own suitable measuring equipment but temporarily lack enough inspection capacity.

Production schedules, new projects, equipment availability, or increased inspection requirements can all create periods when the internal measurement workload exceeds what the quality department can reasonably process.

In that situation, contract inspection may serve as supplemental inspection capacity. The internal team can continue managing its normal responsibilities while selected dimensional work is performed externally.

This is different from lacking the technology completely, but the underlying benefit is similar: manufacturers gain access to measurement resources when their own resources are temporarily insufficient.

Contract Programming Can Address a Different Type of Gap

Sometimes the problem is not access to the CMM itself. The facility may have measuring equipment but need additional support creating a program for a particular inspection task.

FD Hurka Metrology lists contract programming for CMM Manager among its Contract Inspection Lab capabilities.

This addresses a different kind of resource gap. Owning a CMM does not automatically mean every new part already has an established inspection program. Programming requirements can become more complex as part geometry, datum structures, or measurement routines change.

Contract programming may therefore be relevant when the equipment exists internally but the required programming resource is not available for the project.

Inspection at the Lab or at Your Facility

Another consideration is whether the part can reasonably be sent out for inspection.

FD Hurka Metrology states that inspection can be performed at our main office in Charlotte or at the customer’s facility. The appropriate location depends on the inspection requirement, equipment involved, and the specific project.

Some parts are straightforward to transport and can be inspected in a dedicated lab setting. Other situations may make inspection at the customer’s facility more practical.

The important point is to determine the measurement requirements first and then identify the inspection approach that fits those requirements.

When Does Contract Inspection Make More Sense Than Buying Equipment?

Purchasing new measurement equipment can be appropriate when a capability will be needed regularly and fits the company’s long-term inspection strategy. Contract inspection may make more sense when the measurement need is occasional, specialized, temporary, or still being evaluated.

Before deciding, manufacturers can ask:

• How frequently will this measurement be required?
• Does our current equipment have the necessary range and capability?
• Is the measurement need temporary or likely to continue?
• Do we have the operators and programming resources required?
• Would another measurement technology better suit the feature?
• Are we dealing with a prototype, first article, PPAP, or another specialized inspection need?

The answers can help determine whether outsourcing the measurement or adding new equipment is the more appropriate direction.

Prepare the Right Information Before Contract Inspection

A contract inspection provider still needs clear measurement requirements. Manufacturers should be prepared to provide the current drawing, applicable tolerances, revision information, datum requirements, and any other documentation needed to understand what must be inspected.

It is also useful to identify which features require measurement and what type of inspection documentation is needed. Clear information reduces ambiguity and helps ensure that the selected measurement approach matches the actual requirement.

Contract inspection works best when it is treated as an extension of a defined quality process rather than simply sending out a part and asking whether it is acceptable.

FD Hurka Metrology

At FD Hurka Metrology, our Contract Inspection Lab supports dimensional inspection using equipment including Bridge Style CMMs, optical and video comparators, vision systems, height gages, surface plates, hand-held gages, and ULMMs. We also list First Article, PPAP, Masters, Prototype Inspections, and CMM Manager contract programming among our capabilities. If your current measurement equipment cannot handle a part or your team needs additional inspection capacity, visit our Contract Inspection Lab or contact FD Hurka Metrology at 704-552-0008 to discuss your inspection needs.

Frequently Asked Questions

1. What is contract inspection?

Contract inspection is the process of having an outside metrology provider perform dimensional inspection when a company does not have the right equipment, capacity, or measurement capability in-house. It can support projects such as First Article, PPAP, prototype, and other dimensional inspections.

2. When should a manufacturer use contract inspection?

A manufacturer may consider contract inspection when the available equipment cannot measure a required feature, the internal inspection workload is too high, or a project requires a measurement method the facility does not currently have. It can also be useful for temporary or specialized inspection needs.

3. Can contract inspection help if my CMM cannot measure a certain feature?

Yes. If an existing CMM cannot access or properly evaluate a feature, contract inspection may provide access to another measurement technology that is better suited to the part. The best method depends on the geometry, tolerance, and inspection requirements.

4. Is contract inspection useful for First Article Inspection?

Yes. Contract inspection can be useful for First Article Inspection when a new or revised part requires measurements that exceed the capability or capacity of the equipment available internally. Clear drawings, tolerances, datums, and revision information should be provided before inspection begins.

5. Can contract inspection be used for PPAP dimensional inspection?

Yes. Contract inspection may support PPAP dimensional requirements when a manufacturer needs additional measurement equipment or inspection capacity. It can be particularly useful when most dimensions can be checked internally but certain features require a different measurement method.

6. Can prototype parts be sent out for contract inspection?

Yes. Prototype parts can be good candidates for contract inspection because their geometry or measurement requirements may differ from established production parts. External inspection can provide dimensional information while the manufacturer is still deciding what long-term inspection equipment or process may be appropriate.

7. What equipment can be used for contract inspection?

Depending on the provider and application, contract inspection may use equipment such as CMMs, optical comparators, video comparators, vision systems, height gages, surface plates, hand-held gages, and universal length measuring machines. The selected equipment should match the feature and tolerance being measured.

8. Can contract inspection help if we already own the right equipment but are overloaded?

Yes. Contract inspection can provide temporary additional capacity when the internal quality department has more inspection work than it can reasonably complete. This can happen during busy production periods, new product launches, or projects with unusually high inspection requirements.

9. What information should I provide before sending a part for contract inspection?

You should generally provide the current drawing, revision level, tolerances, datum requirements, and clear information about which features need to be inspected. Any specific documentation requirements should also be identified before the inspection begins.

10. When does contract inspection make more sense than buying new equipment?

Contract inspection may make more sense when the measurement need is occasional, temporary, specialized, or still being evaluated. Purchasing new equipment may be more appropriate when the capability will be needed regularly and fits the company’s long-term inspection strategy.