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50-100mm Three Point Internal Bore Micrometer Sets - 3227 Series (Insize)
| Range (mm) | 50-100 |
| Range (inch) | 1-2 |
| Setting Ring | 62mm 87mm |
| b | 57 |
| Accuracy | ±0.005mm |
| Graduation | 0.005mm |
Learn more about Klarna
The Insize 3227 Series 50-100mm Three Point Internal Bore Micrometer Set is designed for precise internal measurements in bores ranging from 50 to 100 mm. With a three-point contact design, carbide measuring faces, and a convenient ratchet stop, this tool delivers repeatable, reliable readings in everyday workshop use.
- Three-Point Internal Bore Contact: Engages the bore at three evenly spaced points for stable, true readings and reduced misalignment across the 50–100 mm range.
- Carbide Measuring Faces with Ratchet Stop: Carbide faces resist wear for longer tool life and consistent contact, while the ratchet stop ensures steady, repeatable pressure and avoids over-tightening.
- Ready-to-Use Kit with Setting Rings and Extension Rods: Includes setting rings and extension rods for fast, accurate setup across different bore depths and sizes, minimizing setup time and effort.
This bore micrometer set supports efficient workflows by delivering dependable measurements with minimal rework. Its durable construction and thoughtful accessory inclusion help engineers, technicians, and hobbyists achieve precise bore measurements quickly and confidently.
| Range (mm) | 50-100 |
| Range (inch) | 1-2 |
| Setting Ring | 62mm 87mm |
| b | 57 |
| Accuracy | ±0.005mm |
| Graduation | 0.005mm |
| Read Out | Analogue |
| IP Rating | IP54 |
| mm or Inch | mm |
| Data Output | No |
| Individual or Set | Set |
| Pcs | 4 |
| Set Includes | 50-63mm 62-75mm |
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 Micrometer Sets - 3227 Series
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