About Us

Q-PLUS is a leading precision dimensional measurement laboratory that, since 1987, has provided a one-stop, under-one-roof solution to all of your precision measurement, inspection, engineering, quality assurance related, and metrology equipment needs. Q-PLUS Labs is ISO 9001 registered and ISO 17025 accredited. Additionally, we are proud to have earned the numerous formal customer approvals that we actively maintain. Q-PLUS is also a long-time member of the American Society for Quality (ASQ). All measurements performed are traceable to the National Institute of Standards and Technology (N.I.S.T.). Q-PLUS exists to meet the quality needs and challenges related to the manufacturing and perfection of your product.

Q-PLUS thinks outside the box on behalf of the customer. Being mindful of our customers needs, we are always thinking several moves ahead with regard to your product's manufacturing process. We take our job very seriously. In this business, we've got to do our job right, no exceptions. What that means is that Q-PLUS will not cut corners. Shortcuts are a preface to problems. While we are always mindful of the importance of cost-effectiveness, we've built our reputation as being the most "valuable" in the industry.

Q-PLUS tackles projects fearlessly and with total confidence. As perfectionists with decades of experience and education to our credit, we intimately understand our role in the overall process. Paramount to doing the job right is understanding the myriad manufacturing methods employed today, proper interpretation of engineering drawings and requirements, and the metrology equipment used to measure. We understand the importance of keeping up with the latest technology and feel it is our responsibility to do so.

Q-PLUS is Your Total Quality Solution. Are you facing these common challenges?

Challenge: Unequipped to handle demanding requirements?

Solution: We use the latest technology available!

Challenge: Lacking the personnel to do the job correctly and fast?

Solution: Consider Q-PLUS an extension of your own company!

Challenge: Questioning the cost effectiveness of using an outside vendor?

Solution: You'll find our prices refreshingly fair and competitive.

Whatever measurement, inspection, engineering, or quality-related challenges you are facing, we have the solutions. 


Q-PLUS was founded in 1987 by a veteran metrologist and quality manager with over 25 years of industry-specific experience and formally educated in the field. Since then, Q-PLUS has been committed to serving customers across the nation and around the world by offering the finest in inspection, measurement, and engineering technologies, principles, and applications as well as attentive and responsive customer service. We provide solutions to a wide array of small and large companies alike for such industries as Aerospace, Defense, Automotive, Commercial and Medical.


Q-PLUS Labs is ISO 9001 registered and ISO 17025 accredited. Additionally, we are proud to have earned the numerous formal customer approvals that we actively maintain. Q-PLUS is also a long-time member of the American Society for Quality (ASQ).

Additionally our Quality Program meets the Nuclear Industry requirements of 10CFR50 Appendix B, NQA-1, and ANSI/NCSL Z540.1-1994. Q-PLUS Labs accepts 10CFR21.

Further, Q-PLUS Labs is ITAR registered with the U.S. Department of State. 


Only customer images and information that are explicitly approved by the customer and/or comply with nondisclosure requirements or are already available in the public domain are used on our website. Customer trust is essential and extremely important to us. We will never disclose proprietary, confidential, classified, or otherwise protected information or images.

 Please contact us if you have any questions or comments.


Q-PLUS is located at 13765 Alton Parkway, Unit E, Irvine, California in the heart of the larger Irvine Spectrum business park, part of what has become known as the Tech Coast. Our expansive facility is amply equipped and staffed to support the broad range of services we offer and products we sell. Our sealed laboratory is isolated from the rest of our facilities and fully environmentally controlled via dedicated control systems. Much of our customer's work is proprietary in nature. Accordingly, all associated confidentiality requirements are strictly adhered to. The security of our customers' interests is given the very highest priority.


Our laboratory employs a vast spectrum of available and proprietary technologies including numerous manual and automatic CMMs, many with multi-sensor capabilities, and high-resolution mass scanning. Sensoring includes many contact and non-contact methods including variable pressure touch-trigger and continuous contact probes, vision with advanced edge detection and articulated lighting, laser, white-light fringe pattern, ultrasonic, hall-effect, and variable reluctance transducer. We can measure with resolutions below .000001 of an inch, lengths over 30 feet long, parts weighing over 1 ton, data collection at rates in the thousands of points per second, on materials ranging from paper to manmade sapphire.


Processes and Materials

Q-PLUS Labs: Processes & Materials

 Below are just some of the manufacturing processes and materials we work with:

Machining Injection Molding Investment Casting Sheet Metal Fabrication
Grinding Blow Molding Die Casting Stamping
Welding Roto Molding Sand Casting Forming
Brazing Sintered Metal Forging Extrusion
EDM Glass Wood & Paper Vapor Deposition
Broaching Hobbing Shaping Tube Bending
Chem Milling Photo-Etching Ceramics Springs
Carbon Fiber Coining Knurling Rapid Prototyping
Spinning Honeycomb Vacuum Formed Laser Cutting



Q-PLUS Labs: Applications

Some of our customers' many fascinating applications and products:

Race Cars Jet Engines Drug Delivery Systems Hydraulics
Turbochargers Surgical Equipment Power Systems Computers
Prosthetics Orthodontics Sports Equipment Weapon Systems
Jet Fighters UAV's Analytical Instruments Vehicle Armor
Tanks Firearms Commercial Aircraft Nuclear Reactors
Smoke Alarms Helicopters Smart Bombs Musical Instruments
Submarines Cell Phones Computer Animation Exercise Equipment
Golf Clubs Motorcycles Laser Printers Space Exploration
Satellites Internet Genomics Forensics
Pacemakers Biothreat Detectors Aviation Safety Fuel Cells


Industries Served

Q-PLUS Labs: Industries Served

Aerospace Medical Defense Automotive
Nuclear Energy Heavy Equipment Pharmaceutical Commercial
Agriculture Telecommunication Biotechnology Environmental
Shipbuilding Sporting Goods Food Processing Furniture
Scientific Education Entertainment Dental
Office Equipment Household Products Printing Apparel
Electronics Jewelry Railroads Personal Care
Semiconductors Motorsports Arts & Entertainment Power Generation

Recent News

Q-PLUS Labs Expands 3D Scanning Arsenal with Big Investment in 3D Scanning

August 2017: Q-PLUS Labs' already impressive arsenal of 3D scanning equipment and capabilities expands even further with the addition of several systems from prestigious 3D scanning manufacturers. These additions will provide customers with repeatable, precise data and structured light scanning accuracies down to 3 microns. In addition to increasing Q-PLUS' array of 3D scanning capabilities, another investment was made to contribute to the company's service offerings for large structured light scanning with a highly advanced, high-end photogrammetry system. Ever committed to providing the best value to customers, Q-PLUS is currently in the process of developing the next level in cutting-edge 3D scanning automation, which we are excited to offer soon! Request a quote

3D Scanning Additions

Q-PLUS Labs Service Spotlight: Part Sorting & High Volume Inspection Services

July 2017: Did you know that Q-PLUS Labs offers Part Sorting and High Volume Inspection Services, both in-lab and on-site as a major division of its comprehensive dimensional measurement & inspection services? Mistakes can be costly, both in time and money, but our expertise can help get you back on track. We deploy experienced personnel and portable equipment to come to your aid at either your facility, your shipment's destination, or by diverting shipments to our lab. Don't let mistakes or out-of-control manufacturing processes prevent you from achieving your objectives, especially when it comes to maintaining your product's integrity, delivering good parts on-time, and preserving your reputation. Let Q-PLUS Labs help you with solutions such as part sorting and high volume inspection, part containment, minor part rework or repair, light assembly, and consulting with our experts to find creative solutions to vexing problems. With over 30 years of experience, we are veterans at deploying skilled and semi-skilled staff in small or large teams to provide accurate and speedy inspection services. Request a quote

Part Sorting Services

Q-PLUS Labs Introduces the GapGun Pro for Revolutionary Speed in Portable Measurement

June 2017: Q-PLUS Labs adds the GapGun Pro to its expansive measurement arsenal. A versatile, hand-held, in-process quality inspection solution, the GapGun Pro rapidly captures measurement data for gap and flush, radius, edge break, burr, countersink, scratch, weld, seal, angle and more. Along with its ability to measure across a wide range of applications, the GapGun Pro also accommodates measurements from carbon fiber to high gloss black paint and chromes. It can also distinguish between different colored parts due to its VChange sensors’ Hi-Range measurement capability which dynamically adjusts the system’s output to allow measurement on multiple surface conditions. Its intuitive user interface enables the operator to always have a read on the results of the GapGun’s full color screen, even in difficult to reach measurement scenarios, allowing the operator to cut down on the amount of time it takes to collect data and increasing overall measurement throughput. 

GapGun Demo