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25-50mm 1-2" IP65 Digital Outside Micrometer - 3101 Series (Insize)
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The 25-50 mm / 1-2" IP65 Digital Outside Micrometer from Insize is a rugged, waterproof measuring tool designed for quick, precise checks in environments where coolant, oil, or dust are present. Its digital readout simplifies reading and reduces guesswork, helping you move from setup to inspection with confidence.
Built for durability and consistent performance, it features carbide measuring faces for long wear resistance and a ratchet for repeatable contact pressure. The unit runs on SR44 or LR44 batteries and includes a spherical anvil for versatile contact points. Calibration is straightforward with setting standards included for most ranges (except 0-25mm/0-1"). With data output available as an option, this micrometer can extend its usefulness up to 300 mm (12"), making it a scalable solution for larger or more complex measurements.
- IP65 waterproof protection and carbide measuring faces: Designed to withstand dusty environments and light water exposure while the carbide faces resist wear, delivering durable, repeatable measurements over time.
- Data output with flexible connectivity: Ready for digital logging and QC workflows, with optional accessories like a foot switch (7304-2) and data output cable (7302-SPC6) for hands-free transfer and streamlined reporting.
- High-precision, easy-to-use digital readout: 0.001 mm / 0.00005" resolution, mm/inch conversion, and user-friendly controls (on/off, zero, ABS/INC) paired with a ratchet to ensure consistent pressure and repeatable results.
Whether you’re on the shop floor, in a maintenance bay, or in a field service role, this micrometer helps you measure quickly and accurately around fluids and coolants, improve workflow consistency, and capture reliable data for every part. Its combination of robust construction, precise digital readout, and optional data transfer features supports precise inspection routines and reduces downtime, so you can trust your measurements from first use and across tasks up to 300 mm (12").
| Range (mm) | 25-50 |
| Range (Inch) | 1-2 |
| l | 57.5 |
| a | 8 |
| b | 32 |
| c | 3 |
| Accuracy | ±0.002mm |
| 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 3101-50A. 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 Viewing | 25-50 | 1-2 | ±0.002mm | £199.72 | 4-5 days | |
| 3101-75A | 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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