Please log in here to access all benefits, including promotional discounts and faster checkouts.
25-30mm 0.98-1.18" Three Point Internal Bore Micrometer - 3227 Series (Insize)
| Range (mm) | 25-30 |
| Range (inch) | 0.98-1.18 |
| Setting Ring | 25mm (included) |
| b | 8 |
Learn more about Klarna
Description
The Insize 3227 Internal 3‑Point Bore Micrometer is a precision instrument designed for measuring internal diameters with confidence. Featuring a three‑point contact system, carbide measuring faces, and a ratchet stop, it delivers repeatable, wear‑resistant performance across frequent measurements. This tool is ideal for engineers, machinists, quality inspectors, and hobbyists who need reliable bore checks.
- Three‑point internal measuring design: Ensures stable, even contact with bore walls for accurate, repeatable readings across cylindrical interiors.
- Carbide measuring faces with ratchet stop: Delivers long wear life and consistent pressure, protecting both the instrument and the workpiece while reducing measurement variability.
- Broad range up to 300 mm with 0.005 mm graduation (setting ring included): Covers a wide variety of bore sizes with precise increments, and the included setting ring enables quick, reliable zeroing between measurements.
This bore micrometer is built for dependable performance in daily shop and inspection work, helping you streamline workflows, minimize rework, and achieve tighter tolerances with confidence. The combination of durable carbide faces, a precise 0.005 mm graduation, and the convenient setting ring makes it a reliable choice for demanding measurement tasks.
Part Numbers
- Protool Part Number
- 3227-30
- Brand
- Insize
- Category
- Measuring Tool
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.
Full Range: Three Point Internal Bore Micrometers - 3227 Series (Insize)
View full collection →You are viewing 3227-30. Click any other SKU to view its full details.
| Product SKU | Metric Range (mm) | Metric Range (Inch) | Ip Rating | mm or Inch | Price | Stock | Order |
|---|---|---|---|---|---|---|---|
| 3227-8 | 46240 | 0.24-0.31 | IP65 | mm|inch | £273.39 | 4-5 days | |
| 3227-10 | 46303 | 0.31-0.39 | IP65 | mm|inch | £273.39 | 4-5 days | |
| 3227-12 | 46366 | 0.39-0.47 | IP65 | mm|inch | £273.39 | 4-5 days | |
| 3227-16 | 42705 | 0.47-0.63 | IP65 | mm|inch | £219.13 | 4-5 days | |
| 3227-20 | 16-20 | 0.63-0.79 | IP65 | mm|inch | £219.13 | 4-5 days | |
| 3227-25 | 20-25 | 0.79-0.98 | IP65 | mm|inch | £285.91 | 4-5 days | |
| 3227-30 Viewing | 25-30 | 0.98-1.18 | IP65 | mm|inch | £285.91 | 4-5 days | |
| 3227-40 | 30-40 | 1.18-1.57 | IP65 | mm|inch | £325.57 | 4-5 days | |
| 3227-50 | 40-50 | 1.57-1.97 | IP65 | mm|inch | £354.78 | 4-5 days | |
| 3227-63 | 50-63 | 1.97-2.48 | IP65 | mm|inch | £393.39 | 4-5 days | |
| 3227-75 | 62-75 | 2.44-2.95 | IP65 | mm|inch | £408.00 | 4-5 days | |
| 3227-88 | 75-88 | 2.95-3.46 | IP65 | mm|inch | £427.83 | 4-5 days | |
| 3227-100 | 87-100 | 3.43-3.94 | IP65 | mm|inch | £449.74 | 4-5 days | |
| 3227-125 | 100-125 | 3.94-4.92 | IP65 | mm|inch | £563.48 | 4-5 days | |
| 3227-150 | 125-150 | 4.92-5.91 | IP65 | mm|inch | £636.52 | 4-5 days | |
| 3227-175 | 150-175 | 5.91-6.89 | IP65 | mm|inch | £705.39 | 4-5 days | |
| 3227-200 | 175-200 | 6.89-7.87 | IP65 | mm|inch | £814.96 | 4-5 days | |
| 3227-225 | 200-225 | 7.87-8.86 | IP65 | mm|inch | £1,039.30 | 4-5 days | |
| 3227-250 | 225-250 | 8.86-9.84 | IP65 | mm|inch | £1,173.91 | 4-5 days | |
| 3227-275 | 250-275 | 9.84-10.83 | IP65 | mm|inch | £1,361.74 | 4-5 days | |
| 3227-300 | 275-300 | 10.83-11.81 | IP65 | mm|inch | £1,581.91 | 4-5 days |
No products match your filters.
