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25-50mm Point Type B Micrometer - 3230 Series (Insize)
| Range (mm) | 25-50 |
| Setting Ring | 75mm (included) |
| Extension Rod | 150mm |
| No Measuring Heads | 4 |
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Description
The Insize 3230 Series 25-50mm Point Type B Micrometer is designed to measure the web thickness of drills, narrow grooves, and keyways with high precision. Built for machinists, inspectors, and hobbyists alike, it provides fast, repeatable readings in a compact, easy-to-use form.
With a 0.01 mm graduation, carbide measuring faces for wear resistance, and a ratchet stop to ensure consistent measuring force, this micrometer stands up to daily use in busy workshops. It is supplied with 60° setting standards (except 0-25 mm) and offers a measurement range up to 100 mm for versatile, all-purpose performance.
- 0.01 mm graduation for precise readings: Enables quick, accurate measurements of thin webs and narrow features, so you can detect small differences at a glance.
- Carbide measuring faces for durability: Hardened tips resist wear and maintain accuracy even after heavy, ongoing use in demanding environments.
- Ratchet stop and 60° setting standards included: Provides consistent measuring force and fast, repeatable setup, boosting confidence in every reading (except 0-25 mm).
This micrometer combines precision with rugged construction to speed up inspections, reduce rework, and improve overall accuracy across a wide range of applications. Its durable design, easy-to-read scale, and flexible 100 mm range make it a dependable addition to any shop, factory, or home workshop.
Part Numbers
- Protool Part Number
- 3230-50BA
- Brand
- Insize
- Category
- Measuring Tool
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.
Full Range: Point Type A Micrometers - 3230 Series (Insize)
View full collection →You are viewing 3230-50BA. Click any other SKU to view its full details.
| Product SKU | Range (mm) | Accuracy | Price | Stock | Order |
|---|---|---|---|---|---|
| 3230-25A | 0-25 | ±0.004 | £97.11 | 4-5 days | |
| 3230-100A | 75-100 | ±0.005 | £133.15 | 4-5 days | |
| 3230-75A | 50-75 | ±0.005 | £114.78 | 4-5 days | |
| 3230-50BA Viewing | 25-50 | ±0.004 | £105.37 | 4-5 days | |
| 3230-25BA | 0-25 | ±0.004 | £97.11 | 4-5 days | |
| 3230-50A | 25-50 | ±0.004 | £105.37 | 4-5 days | |
| 3230-75BA | 50-75 | ±0.005 | £114.78 | 4-5 days |
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