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ITP Straight Styli - Type A - Ruby Ball - M2 Thread x 31mm Overall Length - THM202003031
| Styli Type | Type A |
| Thread Size | M2 |
| Ball Diameter (DK) | 2 |
| Overall Length (L) | 31 |
| Shank Diameter (DG) | 3 |
| Measuring Length (ML) | 23.5 |
Learn more about Klarna
The ITP Straight Styli – Type A with Ruby Ball is a precision probing stylus designed for reliable, everyday measurement in metrology and quality-control workflows. Built around a carbide stem for exceptional rigidity, it delivers stable contact and repeatable results across demanding probing tasks.
- Material and construction: Carbide stem provides high rigidity and long-term dimensional stability for repeatable measurements.
- Ruby ball sizes: High-quality ruby balls available from Ø0.5 mm up to Ø5.0 mm for optimized contact depending on feature size.
- Overall length: 31 mm total length creates a compact, balanced probing geometry for precise touchpoints.
- Thread compatibility: M2 thread for easy mounting with compatible probe heads and adapters.
- Custom sizing availability: Additional sizes can be requested via the configurator or by email to suit specific measurement needs.
Ideal for CMM probing, tactile metrology, and fixture setup, this straight stylus helps you achieve cleaner data and smoother workflows. The combination of a rigid carbide stem and a precisely sized ruby ball minimizes deflection during contact, improving measurement accuracy and surface interaction. When you need to tailor probe geometry to delicate features or tight tolerances, you can request different ruby ball diameters to match your application, all while using a single, reliable tool design.
| Styli Type | Type A |
| Thread Size | M2 |
| Ball Diameter (DK) | 2 |
| Overall Length (L) | 31 |
| Shank Diameter (DG) | 3 |
| Measuring Length (ML) | 23.5 |
| Neck Diameter (DS) | 1.5 |
| Stem Material | carbide |
| Base Material | stainless steel |
| Prob Ball Material | ruby |
What time are Protool open?
We are open Monday to Friday between 8:30am and 5pm.
Do you offer Free Next Day delivery?
Yes! We offer Free Next Day delivery via Royal Mail Tracked 24 on all orders over £50 ex VAT*. We also offer Free DPD Local Next Day delivery on all orders over £100 ex VAT*.
We also offer the following:
- Royal Mail Tracked 24 — £5.90 (FREE on orders over £50 ex VAT*). Order before 4:30pm for next day delivery. No signature required.
- DPD Local Next Day — £8.00 (FREE on orders over £100 ex VAT*). Standard next day delivery to UK mainland addresses.
- Royal Mail Special Delivery — £12.50. Guaranteed delivery before 1pm the next working day.
- DPD Saturday Delivery — £25.00. Must be ordered on Friday before 4pm. Pre-12pm delivery.
For delivery to Scottish Highlands & Islands, Northern Ireland, Republic of Ireland, or overseas locations, additional charges apply. Please see our delivery page for full details, or call us on 01732 887 334.
*T's & C's and exclusions apply. Please see our delivery page for more information on all our services.


