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ITP Straight Styli - Type A - Ruby Ball - M2 Thread x 20.5mm Overall Length - THM201003021
| Styli Type | Type A |
| Thread Size | M2 |
| Ball Diameter (DK) | 1 |
| Overall Length (L) | 20.5 |
| Shank Diameter (DG) | 3 |
| Measuring Length (ML) | 13 |
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The ITP Straight Styli Type A with Ruby Ball is a rugged, precise probing solution designed for everyday metrology tasks. Built around a carbide stem and a high-quality ruby ball, it delivers reliable contact and stable geometry across a range of dimensions.
- Model / part number: THM201003021
- Thread: M2 thread for secure mounting on compatible probes and adapters
- Overall length: 20.5 mm, compact profile for tight access
- Stem material: Carbide for exceptional rigidity and dimensional stability
- Ball size range: Ruby ball options from Ø0.5 mm to Ø5.0 mm to suit different surface profiles
- Type: Type A straight stylus designed for standard, everyday measurement tasks
- Customization: Additional sizes available on request via configurator or email
This stylus is crafted to minimize flex and maintain repeatable results in coordinate measuring machines, calibration rigs, and precision probes. The ruby ball provides a hard, wear-resistant contact point with smooth interaction on diverse materials, while the carbide stem preserves geometry under repeated use. If you need a non-standard ball size, you can request a custom diameter to fit your specific inspection workflow, helping reduce setup time and improve measurement consistency.
| Styli Type | Type A |
| Thread Size | M2 |
| Ball Diameter (DK) | 1 |
| Overall Length (L) | 20.5 |
| Shank Diameter (DG) | 3 |
| Measuring Length (ML) | 13 |
| Neck Diameter (DS) | 0.8 |
| 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.


