Product Spotlight: Now Offering Ultra-Lightweight  M3 Threaded Styli with Diamond Spheres 

Q-Mark now offers ultra-lightweight M3 styli with 3.0 mm diameter solid diamond spheres, carbon fiber stems, and titanium threaded bases. 


Solid diamond spheres do not wear, and are impervious to material build-up. These styli are available in any length from 20.0 to 58.0 mm

All weigh less than one gram. 
They ship the same day they’re ordered. 

To order, visit, email, or call 1-949-457-1913 to speak with a CMM stylus expert.

Product Spotlight: Q-Mark Now Offering Very Small Silicon Nitride Sphere Styli


Q-Mark now offers 0.4 mm and 0.6 mm diameter silicon nitride spheres in its CMM stylus product line.


Silicon nitride is an extremely hard ceramic with a very low coefficient of friction. When polished, it’s an outstanding bearing material. Silicon nitride bearings provide long service life under very demanding conditions.


When used with CMM styli, silicon nitride spheres offer distinct advantages over conventional ruby spheres. They exhibit less wear, and don’t accumulate material on their surface like ruby spheres.


Our clients report up to 5 times longer stylus life on rough part surfaces or on very soft materials.



You can specify a 0.4 mm or 0.6 mm diameter silicon nitride sphere on any Q-Mark stylus that uses the same size ruby sphere. Just add “-SN” after the part number.


If you have any questions about the best stylus sphere for your application, we’re happy to help you.


Simply email or call 1-949-457-1913 to speak with a CMM stylus expert.


Discover Q-Mark’s Range     of Blum Novotest™ Compatible Parts


Blum-Novotest™ GmbH manufactures specialized machinery and components for industrial metrology.  Their high-speed touch probes are used on numerous CNC machine tools.  Many of Q-Mark’s clients employ Blum-Novotest™ machine tool probes as a part of their overall process and quality control systems.


Blum-Novotest™ touch probes use M4 threaded styli to make contact with the workpieces.  The styli have ruby balls; ceramic, stainless steel, or carbide stems; and stainless steel bases.  Q-Mark now offers a full line of styli and extensions that are compatible with Blum-Novotest™ touch probes.


Q-Mark’s styli and extensions for Blum-Novotest™ touch probes are USA made and in stock at our Southern California factory.  Like all Q-Mark catalog products, they are 100% guaranteed, and available for overnight delivery.


Click the button below to view our styli and extensions for Blum-Novotest™ touch probes. 


 All sizes are in stock and ready to ship. 
UPS ground delivery is FREE when you order online.

Discover Q-Mark’s Range of Metrol™-Compatible Styli


Metrol™ is a Japanese firm that manufactures wireless probe 
systems for on-machine probing.  The probe systems are resistant 
to radio-wave interference and unaffected by obstacles and coolant.  A stylus is needed to trigger the wireless signal.


Q-Mark offers a full range of Metrol™-compatible styli, 
with spheres from 1.0 mm to 5.0 mm diameter.  A variety of sphere materials are available from stock, including ruby, silicon nitride, 
and zirconia.  All sizes are in stock and ready to ship. 
UPS ground delivery is FREE when you order online.

Above: Metrol™-compatible styli with 1.0 mm diameter carbide 

and 2.0 mm diameter ruby spheres.



How to Easily Calibrate Disc, Miniature and Cylinder Probe Styli Using Calibration Spheres


As featured on Quality Digest Live's Tech Corner:

Dirk Dusharme, Editor in Chief at Quality Digest Magazine, walks us through the simple steps to calibrate a 16 mm disc probe, a 300 micron probe and a 2 mm cylinder probe using a 25 mm and 8 mm calibration sphere. Q-Mark offers all these products including the calibration spheres and mounting stands. 


1 Quick Trick to Designing Your Custom Probe Styli


As featured on Quality Digest LIVE: Editor in Chief at Quality Magazine Dirk Dusharme, explains how to use the Design your Own Probe™, a helpful and interactive online probe designer offered by Q-Mark Manufacturing Inc.


Enter your own dimensions, specs and materials to design your custom probe in minutes. Once your design is submitted, our friendly Q-Mark sales team will receive the custom order specs and follow-up with you to confirm. Most custom items will ship out


Product Spotlight: Q-Mark Products Compatible With Hexagon Scanning Probes

In addition to compatible clamping adapter plates (shown below), 
Q-Mark manufactures hundreds of M3 styli and extensions 
suited for the LSP-X1C and LSP-X1H probe heads. We offer both stainless steel and lightweight carbon fiber accessories as suggested by Hexagon for use on these scanning probes. 


Users can choose from ruby, silicon nitride, zirconia, or diamond spheres in most sizes.  These products are USA made, and available to ship same-day. Q-Mark’s customers can look forward to future releases of other clamping adapter plates and ports compatible with Hexagon scanning probes.  

Product Spotlight: Pro Fit Conical Assemblies

Pro Fit assemblies permit limitless radial adjustment of stylus parts.  The two-piece design uses twin tapered seats with three set screws.  The screws hold the two parts firmly together when tightened.  


This design saves weight and maintains its outer diameter with sleek hardware insets.

Pro Fit components are available in 11.0 mm diameter M5 threads and 4.0 mm diameter M3 threads.  They are also available in aluminum and titanium. 

End Styli Wear and Build-Up Forever with Diamond Styli

Q-Mark is pleased to offer precision diamond styli in nearly any 
standard thread size and configuration. Diamond styli are an excellent choice for demanding applications. Diamond sphere performance is unmatched when measuring hard, abrasive, or very soft surfaces.

Unlike ruby spheres, no substance sticks to diamond spheres, 
not even the softest aluminum alloys. Diamond spheres retain their high-precision spherical form at all times, thereby preventing additional measuring uncertainties. This saves you time and money because checking, cleaning, and recalibration are theoretically eliminated.


Diamond is the hardest known natural material on earth. 
Pure diamonds can only be scratched by other diamonds. Diamonds resist breaking under impact and are impervious to strong acids, bases, and chemical solvents. These beneficial properties ensure that your diamond styli will retain their high-quality spherical form indefinitely. There's no need to inspect them for wear.  


Another advantage of diamond coated spheres is their high Grade 5 (less than 150 nm) sphericity. They're available in more sizes, 
and they cost less than solid diamonds.


Diamond styli are available in two types: solid diamond, and diamond coated spheres. Which tip should you use?


Solid Diamond spheres should be used when probing hard or 
abrasive surfaces.
The diamond tip will not wear, even when used with high probing or scanning forces. Solid diamond spheres are ground and polished to Grade 10 sphericity (less than 250 nm).


When probing soft alloys, like aluminum, use diamond coated spheres. No buildup occurs when probing or scanning soft materials with diamond coated spheres.

Video: Design Your Own Probe™ in Minutes Online

Manufacturing Manager, Clint Clark of Q-mark Manufacturing walks us through how to Design Your Own Probe™ online. Design Your Own Probe™ is an interactive online tool that allows customers to design, proof and order their custom part online in just a few minutes.


Follow us on YouTube to learn more...


New Distributor

Q-Mark Manufacturing Inc. is proud to announce our latest partnership with trusted distributor Ragot CAD/CAM Services. They will be servicing Nova Scotia and New Brunswick Canada. 

Ragot CAD/CAM Services brings:

  • ​20 Years of Experience
  • Added Value Support: Full training and tech support for all products
  • Reliable Service: Speedy, local support 


  • Tri-Lingual Services: French, English, Spanish


  • Memberships and Accreditations: CFIB, New Brunswick Metalworking Association, CME, APCC.



Paul Ragot founded Ragot CAD/CAM Services in 1998. As a value-added reseller of Mastercam, and other add-on software, they offer full technical support and training for all their products. 


In 2008, Ragot CAD/CAM Services added Contract Measuring to their list of services. Their ROMER portable CMM allows us to measure both complex and oversize parts — like propeller blades, vehicle exteriors, and welding fixtures.



About Paul Ragot


Paul Ragot is known throughout Atlantic Canada as the go-to expert for CAD/CAM/ DNC software solutions and portable CMM measuring services.


A mechanical engineer by trade, Paul has 20 years experience using CAD/CAM software — with the last 10 years focused on CNC programming of 2 to 5 axis CNC milling machines, 2 to 9 axis mill-turn lathes, and wood routers.



Ragot CAD/CAM Services works with clients from all industries:


  • Manufacturing
  • Defense
  • Aerospace
  • Transportation
  • Marine
  • Mining
  • Railroad
  • Green Energy
  • Food Industry
  • Construction
  • Auto Racing

Q-Mark Product Spotlight September 2018

The Spotlight this month is our booth at IMTS! Visit us at 135501 and let us show you are newest products.

 Q-Mark Product Spotlight July 2018

Diamond Sphere Styli


Diamond sphere styli are steadily increasing in popularity among CMM users. Q-Mark is pleased to offer precision diamond styli in nearly any standard thread size and configuration. Diamond styli are an excellent choice for demanding applications. Their performance is unmatched when measuring hard, abrasive, or very soft surfaces. They are available in two types: solid diamond, and diamond coated spheres. Please contact Q-Mark for assistance with your measurement challenge.

Q-Mark Product Spotlight June 2018

Figure 1
Figure 2

Cube Squared


Q-Mark clients are creative. They constantly offer us ideas for new or improved products, ideas that spring from real-life, on-the-job issues. A prime example is the Cube Squared (Fig. 1, above), a hand-held gadget that squares adapter plate cubes to a CMM’s X and Y axes in less than one minute. And, as if that wasn’t a good enough idea, someone else suggested making it adjustable to any angle. So, the Cube Squared Plus was born (Fig. 2, above). The Cube Squared Plus sets the cube to any angle between zero and ninety degrees. Both Cube Squared designs are popular with CMM operators all over the world. And, both were proposed by Q-Mark clients.


Several items in our catalog were originally suggested by clients. I’m grateful to folks who take the time and effort to describe their ideas to us. It’s said that ideas are among the most important things on earth. Everything begins with an idea.

Q-Mark Product Spotlight  May 2018

Cylinder Styli


Cylinder styli are used to measure edge features, like sheet metal edges, stampings, or thin lands between grooves.  We manufacture cylindrical styli from stainless steel, carbide, and ruby. They are available in all thread sizes. We have a wide selection of standard diameters and lengths, or they can be manufactured to your specifications.


Please note that cylinder styli are not suitable for high-accuracy work, because their form is less precise than our spherical styli.  In addition, cylindrical styli require a special calibration routine. Just click on the FAQ tab on our website ( for help with calibrating a cylinder stylus.

Q-Mark Product Spotlight April 2018

Electrically Conductive Styli


Many probe systems use a mechanical switch to sense when they “touch” a surface. A few, however, rely on an electrical signal to confirm contact. These probe heads use electrically conductive styli. Q-Mark makes a full selection of styli that are electrically conductive. We use carbide spheres, one-piece stainless steel base and stem, and an electrically conductive bonding agent to bond the sphere to the stem. Our electrically conductive styli work with any probe system.

Q-Mark Product Spotlight March 2018

Small Calibration Spheres

Small diameter calibration spheres are essential when qualifying small diameter styli.  They allow the stylus to reach more of the sphere’s surface, giving better qualification values.  They also reduce the possibility of “shanking out” the stylus during qualification.  This helps reduce breakage.


Shown here are 5.0 and 8.0 mm ruby calibration spheres.  They are Grade 5, serialized, and furnished with laboratory certs as to form and diameter.  Their stainless steel stems have M6 threads.


We offer Grade 5 calibration spheres in diameters ranging from 5.0 mm to 30.0 mm.  When qualifying small diameter tips, always use a small diameter calibration sphere.

Q-Mark Product Spotlight February 2018


End the guesswork over the correct thread and ball sizes for your probe system. Our thread card has ten tapped holes between M2 and 3/8”-24 to check the thread size, and ten holes ranging from 1.0 to 6.0 mm to gage the ball size. A built-in 40 mm engraved scale confirms the stylus length. We make these from aircraft grade aluminum that is anodized and laser engraved. Protective slip cover included.


They're available at Just type "thread card" in the search box.

Q-Mark Product Spotlight January 2018



What is silicon nitride?


Silicon nitride is an extremely hard hybrid ceramic (Si3N4) with a very low coefficient of friction.  It’s used in high-speed spindle bearings and aircraft flap actuators to provide longer service life in demanding environments.


Why are silicon nitride styli better than ruby styli?


When ruby balls touch soft materials - aluminum, for example - they tend to accumulate tiny bits of the material on the ball.  Over time, this build-up of metal on the ball can result in measurement errors.  When this happens, the stylus must be discarded.


When ruby balls are used on hard or abrasive materials, they can develop flat spots caused by wear.  When a flat spot appears, the stylus must be discarded.


Silicon nitride has a significantly lower coefficient of friction than ruby.  It's extremely hard, too - about 78 Rc.  Therefore, silicon nitride balls exhibit less wear and don't tend to accumulate material on their surface like ruby balls. Our clients report up to 5 times longer tool life in demanding applications using silicon nitride balls instead of ruby.

Q-Mark Product Spotlight December 2017



Ever-increasing accuracy requirements are driving probe sensor technology to higher levels of sensitivity. In many cases, this drive has reduced the amount of stylus weight that a probe sensor will tolerate. Q-Mark has responded to this need by producing a full line of ultra-light styli and stylus extensions.

In the pictures, three Q-Mark styli plus one 50 mm extension (Figure 1) weigh 4.40 grams, combined. By contrast, a newly minted nickel (Figure 2) weighs over half a gram more.

We achieve this extraordinary weight reduction by incorporating titanium and carbon fiber elements in our products. Since we do all the manufacturing and assembly, we can monitor the product weight at every step of the process. Titanium and carbon fiber offer the added benefit of very high stiffness-to-weight ratios.

If your CMM needs to go on a weight-loss campaign for the sake of accuracy, turn to Q-Mark for immediate gratification.


Q-Mark Product Spotlight November 2017

ProFit Products

Disk Styli


Disk styli are used to probe interior grooves. The fascinating thing about disk styli is that there are seemingly no two alike. As part geometry varies, so do disk stylus dimensions. We get requests for custom disks, like the one pictured, nearly every day. Visit our website,, and click on the tab “Design Your Own”. You’ll have it in a surprisingly short time.