The ITP Disc Styli stainless steel Prob Ball is a precision spherical disc probe designed for metrology tasks that involve large inside diameters and integrated undercuts. This Type M accessory, featuring a 25 mm ball and M2 thread, is built for reliability in demanding measurement work.

• Material: Stainless steel for durable, corrosion-resistant performance.
• Ball diameter: 25 mm ball provides stable contact for large internal geometries.
• Thread: M2 mounting thread on the stem for compatibility with standard probes.
• Model: Type M disc stylus designed for precision probing.
• Primary use: Realises accurate measurement of large inside diameters and integrated undercuts.
• Z-direction note: Normal disks are unsuitable for probing in the Z direction unless using discs with radius end rollers.

This disc stylus enables reliable access to deep or recessed internal features, supporting repeatable, high-precision measurements in complex parts. The 25 mm ball creates a substantial contact surface that helps minimize measurement variability, while the stainless steel body stands up to daily workshop use. The M2 mounting thread ensures quick, secure attachment to common metrology heads, making it a practical choice for inspectors, machinists, and engineers working with large internal diameters and undercut features.