The ITP Disc Styli stainless steel / ruby is a precision probing accessory designed for CMM work. It’s ideal for metrology professionals who need reliable access to large internal features and undercuts, delivering repeatable measurements in challenging recesses.

• Ball diameter: 21 mm ruby ball for a robust, high-precision contact point on large inner diameters.
• Thread: M5 mounting thread for secure, quick attachment to compatible probes.
• Material: Stainless steel base with a ruby contact ball for excellent wear resistance and long-term stability.
• Disc geometry: Spherical disc design engineered to minimize deflection and maintain surface contact during measurement.
• Type / code: Type M configuration, product code KIM503021M50, designed for seamless integration with standard CMM setups.
• Probe limitation note: Important note: Normal disks are unsuitable for probing in the Z direction (except discs with radius end rollers).

This disc stylus enables accurate measurement of large inside diameters and integrated undercuts, where conventional disks may fall short. The ruby ball’s hardness enhances wear resistance, helping maintain measurement integrity over repeated use, while the stainless steel body provides rigidity and reliable performance across multiple inspection cycles. Use this accessory to expand your CMM capabilities in manufacturing, aerospace, automotive, and tooling applications, delivering consistent contact geometry and helping you capture true internal dimensions with confidence.