Straight styli with a silicon nitride ball and stainless steel stem have been developed for daily use on coordinate measuring machines (CMMs) and provide a reliable solution for a wide range of measurement tasks. The combination of a stainless steel stem and a precision silicon nitride ball offers high rigidity, robust construction, and excellent durability. The stainless steel stem ensures high stability and supports precise, repeatable measurement results, even in demanding day-to-day inspection environments. In addition, the material is highly resistant to corrosion and designed for a long service life. Silicon nitride balls are particularly suitable for measuring and scanning workpieces made from untreated aluminum. Compared to conventional ruby balls, they exhibit a lower tendency for material adhesion, reducing the build-up of deposits on the ball surface. This helps maintain consistently high measurement quality and improves process reliability. As a result, silicon nitride balls are the preferred choice for applications where aluminum components are measured or scanned on a regular basis. The product range includes styli with ball diameters from Ø 1.0 mm to Ø 8.0 mm, covering a broad spectrum of typical measurement applications. Special sizes and custom-designed versions can be requested at any time via the configurator or by email. The straight stylus with a silicon nitride ball and stainless steel stem is the ideal choice for users who require high accuracy, long-term reliability, and optimized performance when measuring aluminum components in daily inspection processes.