(Q-Mark: Rancho Santa Margarita, CA) -- Q-Mark is now offering 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.

No more cleaning or build-up

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.

The hardest substance on Earth

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.

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