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ITP Straight Styli - Type B - Ruby Ball - M5 Thread x 20mm Overall Length - THM501011020
| Styli Type | Type B |
| Thread Size | M5 |
| Ball Diameter (DK) | 1 |
| Overall Length (L) | 20 |
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Description
ITP Straight Styli Type B with Ruby Ball is a precision probing stylus designed for metrology professionals who rely on consistent, contact-based measurements. Built for daily use in coordinate measuring machines and inspection setups, it combines rugged construction with versatile ruby-ball tips for dependable readings.
- Stem material and rigidity: Extremely rigid tungsten carbide stem delivers high stiffness and minimal deflection across a wide range of measurements.
- Ruby-ball tip sizes: Premium ruby spheres from Ø0.2 mm to Ø1.5 mm provide precise, durable contact with surfaces and features.
- Tip size options: Other sizes can be requested via the configurator or by email to tailor the stylus to your specific tasks.
- Mounting thread: M5 thread ensures secure attachment to standard probing heads and compatible systems.
- Overall length: 20 mm overall length offers a compact reach for tight fixtures and instrument housings.
- Stem configuration: Straight design that can be configured as single- or multi-stepped to suit different probing strategies.
The combination of a durable tungsten carbide stem and high-quality ruby balls translates into repeatable, long-lasting measurements. The 20 mm length and M5 mounting make it a practical choice for routine inspection tasks, delicate feature probing, and edge or datum measurements in busy quality labs. By selecting the appropriate ruby-ball diameter (0.2–1.5 mm) or requesting a custom size, you can optimize contact geometry for your specific workpiece and measurement setup. For best results, keep the ball surfaces clean and intact, apply steady contact pressure, and recalibrate after changing ball size or configuration.
Part Numbers
- Protool Part Number
- ITP-THM501011020
- 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.


