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ITP Straight Styli - Type A - Ruby Ball - M3 Thread x 50mm Overall Length - THM305004050
| Styli Type | Type A |
| Thread Size | M3 |
| Ball Diameter (DK) | 5 |
| Overall Length (L) | 50 |
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Description
Precision straight stylus for metrology and inspection professionals. The Type A Ruby Ball version combines a rigid carbide stem with a durable ruby ball for reliable, everyday probing.
- Thread: M3 thread compatible with standard probe housings.
- Overall Length: 50 mm total length for versatile reach in common fixtures.
- Stem Material: Carbide stem delivers exceptional rigidity and minimizes deflection during probing.
- Ball Diameter Range: High-quality ruby balls available from Ø0.5 mm to Ø6.0 mm for precise contact.
- Geometry: Straight configuration optimized for routine probing, scanning, and edge measurements.
- Customization: Additional ruby ball diameters can be requested via the configurator or by email.
By pairing a stiff carbide stem with a durable ruby contact surface, this stylus provides repeatable measurements with reduced wear and longer tool life. The 50 mm reach fits a wide range of fixtures and probe setups, while the M3 threading ensures a secure, stable connection during high-precision tasks. If your application calls for different ball sizes, you can request other diameters to tailor the stylus to microfeatures, fine edges, or larger surface scans.
Part Numbers
- Protool Part Number
- ITP-THM305004050
- Brand
- ITP
- Category
- Styli
Need cutting data? Call 01732 887334 or email sales@protool-ltd.co.uk.
Delivery
Free UK mainland delivery on orders over £50 ex VAT. In-stock items ordered before 4:30pm are dispatched the same working day. Full delivery information.
Returns
14-day returns on unused stock items in original packaging. Special-order and bespoke tooling is non-returnable. Read our returns policy.
Technical Support
Over 30 years of machining experience behind the counter. Call 01732 887334, Mon–Thurs 8:30–17:30, Fri 8:30–16:30.
Trade Accounts
Credit accounts, contract pricing and scheduled call-off orders available for trade customers. Apply for an account.
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.


