Please log in here to access all benefits, including promotional discounts and faster checkouts.
225-250mm Metric Outside Micrometer - 3203 Series (Insize)
| Range (mm) | 225-250 |
| Setting Ring | 287.5mm (optional) |
| l | 260 |
| a | 19.4 |
| b | 142 |
| Accuracy | ±0.008mm |
Learn more about Klarna
The Insize 3203 Outside Micrometer is a precision instrument for measuring external dimensions in metric units. With a clear 0.01 mm graduation and a measuring range up to 300 mm, it’s a versatile tool for daily use in machining, inspection, and quality control. The 3203 is one of Insize’s best selling micrometers, trusted by professionals for accuracy when it matters most.
- 0.01 mm graduation for crisp, repeatable readings: easy-to-read scales deliver quick, reliable measurements with less guesswork, helping you keep tight tolerances across parts.
- Carbide measuring faces for longer tool life: built to resist wear from routine shop use, maintaining accuracy over thousands of measurements and reducing replacement costs.
- Supplied with setting standards (except 0-25 mm): ready-to-calibrate out of the box to speed setup and ensure consistent performance across your measurement tasks.
Designed for engineers, machinists, buyers, and hobbyists alike, this micrometer supports efficient workflows and dependable results. Its rugged construction and precise metric measurement capability help you reduce downtime, improve part consistency, and achieve dependable measurements across a range of external dimensions.
| Range (mm) | 225-250 |
| Setting Ring | 287.5mm (optional) |
| l | 260 |
| a | 19.4 |
| b | 142 |
| Accuracy | ±0.008mm |
| Read Out | Analogue |
| mm or Inch | mm |
| Data Output | No |
| Individual or Set | Individual |
| Graduation | 0.01mm |
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: Metric Outside Micrometers - 3203 Series (Insize)
View full collection →You are viewing 3203-250A. Click any other SKU to view its full details.
| Product SKU | Range (mm) | Accuracy | Price | Stock | Order |
|---|---|---|---|---|---|
| 3203-25A | 0-25 | ±0.004mm | £24.91 | 4-5 days | |
| 3203-50A | 25-50 | ±0.004mm | £27.32 | 4-5 days | |
| 3203-75A | 50-75 | ±0.005mm | £35.58 | 4-5 days | |
| 3203-100A | 75-100 | ±0.005mm | £39.94 | 4-5 days | |
| 3203-125A | 100-125 | ±0.006mm | £54.29 | 4-5 days | |
| 3203-150A | 125-150 | ±0.006mm | £62.21 | 4-5 days | |
| 3203-175A | 150-175 | ±0.007mm | £78.86 | 4-5 days | |
| 3203-200A | 175-200 | ±0.007mm | £82.07 | 4-5 days | |
| 3203-225A | 200-225 | ±0.008mm | £88.50 | 4-5 days | |
| 3203-250A Viewing | 225-250 | ±0.008mm | £102.16 | 4-5 days | |
| 3203-275A | 250-275 | ±0.009mm | £113.63 | 4-5 days | |
| 3203-300A | 275-300 | ±0.009mm | £120.52 | 4-5 days |
No products match your filters.
