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4-5" Imperial Outside Micrometer - 3203 Series (Insize)
| Range (Inch) | 4-5 |
| Setting Ring | 287.5mm (optional) |
| l | 5.236 |
| a | 0.65 |
| b | 2.874 |
| Accuracy | ±.00025 |
Learn more about Klarna
The Insize 3203 Outside Micrometer is a precise 4–5 inch imperial measuring tool designed for accurate external measurements in metalworking, engineering, and quality-control workflows. With a 0.0001" graduation, it provides fine resolution for reliable checks and consistent part tolerances. This model is a proven favorite in the Insize line, valued for dependable performance in busy shops.
Equipped with carbide measuring faces, it delivers longer tool life and better durability in daily use, resisting wear from repetitive contact with hard surfaces. The micrometer ships with setting standards to speed setup and ensure repeatable baselines across parts (note: the 0–1" size is not included with setting standards).
- 0.0001" graduation: Delivers fine, repeatable measurements that help you verify tolerances quickly and reduce rework.
- Carbide measuring faces: Extends tool life and maintains accuracy in demanding shop conditions, reducing maintenance and downtime.
- Includes setting standards: Quick, consistent calibration for dependable results across batches (except 0–1" size).
This micrometer helps you streamline inspection, improve workflow accuracy, and deliver consistent results across production runs. Its robust design and precise scale support reliable measurements from setup through final QC, making it a trusted choice for professionals who value accuracy and longevity in their measuring tools.
| Range (Inch) | 4-5 |
| Setting Ring | 287.5mm (optional) |
| l | 5.236 |
| a | 0.65 |
| b | 2.874 |
| Accuracy | ±.00025 |
| 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 3203-5A. 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 Viewing | 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 | 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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