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50-75mm 2-3" IP65 Digital Outside Micrometer - 3101 Series (Insize)
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The 50-75mm (2-3") IP65 Digital Outside Micrometer from Insize 3101 Series is a rugged, digital measuring tool designed for fast, precise outside measurements. Its IP65 waterproof rating protects against machine fluids, dust, and coolant exposure, making it a reliable choice for work on the shop floor, in maintenance, or on production lines.
Built with carbide measuring faces for enhanced wear resistance, this micrometer delivers repeatable results over many cycles. The integrated ratchet ensures consistent pressure for accurate readings, while the spherical anvil add flexibility for a variety of contact surfaces. It operates on standard SR44 or LR44 batteries and offers straightforward controls for quick setup, including on/off, zero, mm/in, ABS/INC, and data output. Setting standards are included (except 0-25mm/0-1"), and optional data-transfer accessories are available to streamline your workflow. When used with data output, measurements can extend up to 300 mm.
- IP65 waterproof design: Built to withstand water, dust, and coolant exposure so you can measure confidently in harsh or wet environments without removing the instrument.
- Durable carbide measuring faces with ratchet: Long-wear surfaces combined with a ratchet deliver precise, repeatable readings across repeated measurements.
- Data output readiness and easy setup: Quick data transfer, simple button controls (on/off, zero, mm/in, ABS/INC), and compatibility with optional data-transfer accessories to integrate into quality workflows.
This micrometer is designed to speed up measurement tasks, reduce downtime, and improve reliability across jobs. Its durable construction, precise measurement surfaces, and data-output capability help you capture accurate results, keep records clean, and maintain consistent performance on demanding projects.
| Range (mm) | 50-75 |
| Range (Inch) | 2-3 |
| l | 82.5 |
| a | 8 |
| b | 44.5 |
| c | 3 |
| Accuracy | ±0.003mm |
| Resolution | 0.001mm/0.00005 |
| Read Out | Digital |
| IP Rating | IP65 |
| mm or Inch | mm|inch |
| Data Output | Yes |
| Individual or Set | Individual |
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: IP65 Digital Outside Micrometers - 3101 Series (Insize)
View full collection →You are viewing 3101-75A. Click any other SKU to view its full details.
| Product SKU | Range (mm) | Range (Inch) | Accuracy | Price | Stock | Order |
|---|---|---|---|---|---|---|
| 3101-25A | 0-25 | 0-1 | ±0.002mm | £156.10 | 4-5 days | |
| 3101-50A | 25-50 | 1-2 | ±0.002mm | £199.72 | 4-5 days | |
| 3101-75A Viewing | 50-75 | 2-3 | ±0.003mm | £218.09 | 4-5 days | |
| 3101-100A | 75-100 | 3-4 | ±0.003mm | £243.34 | 4-5 days | |
| 3101-125A | 100-125 | 4-5 | ±0.003mm | £285.81 | 4-5 days | |
| 3101-150A | 125-150 | 5-6 | ±0.003mm | £297.29 | 4-5 days | |
| 3101-175A | 150-175 | 6-7 | ±0.004mm | £311.06 | 4-5 days | |
| 3101-200A | 175-200 | 7-8 | ±0.004mm | £337.46 | 4-5 days | |
| 3101-225A | 200-225 | 8-9 | ±0.005mm | £366.16 | 4-5 days | |
| 3101-275A | 250-275 | 10-11 | ±0.006mm | £412.07 | 4-5 days | |
| 3101-250A | 225-250 | 9-10 | ±0.005mm | £392.56 | 4-5 days | |
| 3101-300A | 275-300 | 11-12 | ±0.006mm | £457.98 | 4-5 days |
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