Q-Mark manufactures styli and accessories


 for the metrology and machine 


tool industries. 



Our products are manufactured in


California, USA. 



We offer same-day shipping of


all our catalog products. 


Custom designs are welcome.  

Download Your New Catalog

The Latest News:

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. Read More...

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