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ITP Straight Styli - Type A - Ruby Ball - M2 Thread x 31.25mm Overall Length - THM202503031
| Styli Type | Type A |
| Thread Size | M2 |
| Ball Diameter (DK) | 2.5 |
| Overall Length (L) | 31.25 |
| Shank Diameter (DG) | 3 |
| Measuring Length (ML) | 23.75 |
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The ITP Straight Styli Type A with Ruby Ball is a precision carbide stylus designed for everyday probing tasks. It delivers reliable rigidity and repeatable contact, making it ideal for metrology professionals who require consistent results in tight spaces.
- Design: Straight Type A stylus built for dependable, standard probing workflows.
- Material: Carbide stem for exceptional rigidity and long-lasting wear resistance.
- Tip: Ruby ball tip available from Ø0.5 mm to Ø5.0 mm, crafted for smooth, precise contact with diverse surfaces.
- Thread: M2 threaded connection for secure attachment to standard probes and fixtures.
- Length: 31.25 mm overall length, offering a compact profile suitable for tight-access applications.
- Custom sizing: Additional ruby-ball sizes can be requested via configurator or by email to tailor the stylus to specific measurement needs.
With its ultra-rigid carbide stem and high-quality ruby ball tips, this straight stylus minimizes deflection and delivers repeatable measurements across various materials and finishes. The M2 connection simplifies integration into common probing systems, reducing setup time and downtime. The option to select different ruby-ball diameters—and to request additional sizes—lets you optimize contact geometry for micro-features, surface surveys, or reference-point probing, enhancing accuracy and throughput in metrology workflows.
| Styli Type | Type A |
| Thread Size | M2 |
| Ball Diameter (DK) | 2.5 |
| Overall Length (L) | 31.25 |
| Shank Diameter (DG) | 3 |
| Measuring Length (ML) | 23.75 |
| Neck Diameter (DS) | 2 |
| 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.


