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7-8" Imperial Outside Micrometer - 3203 Series (Insize)
| Range (Inch) | 7-8 |
| Setting Ring | 287.5mm (optional) |
| l | 8.228 |
| a | 0.764 |
| b | 4.606 |
| Accuracy | ±.00028 |
Learn more about Klarna
The Insize 3203 Series 7-8" Imperial Outside Micrometer is a precision measuring tool designed for engineers, machinists, hobbyists, and shop professionals who need quick, reliable outside-diameter measurements. With a precise 0.0001" graduation, it delivers readings you can trust for tight tolerances.
The rugged green frame and knurled thimble provide a comfortable, secure grip for fast measurements, while carbide measuring faces resist wear to extend tool life in daily workshop use. This model is widely recognized as the best selling Insize micrometer and comes with setting standards (except 0-1") to help you quickly establish a reliable baseline.
- 0.0001" graduation: Delivers precise readings to the ten-thousandth of an inch for tight tolerances and repeatable results.
- Carbide measuring faces: Hardened faces resist wear from hard materials, extending tool life and maintaining accuracy over time.
- Includes setting standards (except 0-1"): Enables fast zero-setting and reliable baseline checks out of the box, reducing setup time and measurement drift.
In daily use, the 3203 outside micrometer delivers dependable measurements that support accurate inspection, reduce rework, and improve workflow across workshops, manufacturing floors, and DIY projects. Its combination of precise graduation, durable construction, and ready-to-use setup helps you achieve consistent results on every part.
| Range (Inch) | 7-8 |
| Setting Ring | 287.5mm (optional) |
| l | 8.228 |
| a | 0.764 |
| b | 4.606 |
| Accuracy | ±.00028 |
| Read Out | Analogue |
| mm or Inch | inch |
| Data Output | No |
| Individual or Set | Individual |
| Graduation | 0.0001 |
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: Imperial Outside Micrometers - 3203 Series (Insize)
View full collection →You are viewing 3203-8A. Click any other SKU to view its full details.
| Product SKU | Range (Inch) | Accuracy | Price | Stock | Order |
|---|---|---|---|---|---|
| 3203-1A | 0-1 | ±.00015 | £27.89 | 4-5 days | |
| 3203-2A | 1-2 | ±.00015 | £31.45 | 4-5 days | |
| 3203-3A | 2-3 | ±.00020 | £36.96 | 4-5 days | |
| 3203-4A | 3-4 | ±.00020 | £41.32 | 4-5 days | |
| 3203-5A | 4-5 | ±.00025 | £54.75 | 4-5 days | |
| 3203-6A | 5-6 | ±.00025 | £62.10 | 4-5 days | |
| 3203-7A | 6-7 | ±.00028 | £81.04 | 4-5 days | |
| 3203-8A Viewing | 7-8 | ±.00028 | £84.94 | 4-5 days | |
| 3203-9A | 8-9 | ±.00031 | £91.60 | 4-5 days | |
| 3203-10A | 9-10 | ±.00031 | £102.16 | 4-5 days | |
| 3203-11A | 10-11 | ±.00035 | £113.18 | 4-5 days |
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