Please log in here to access all benefits, including promotional discounts and faster checkouts.

75-100mm/3-4"Insize Digital Blade Type A Micrometer (3532 Series (Insize)
| Range (mm) | 75-100 |
| Range (Inch) | 3-4 |
| b | 69.5 |
| Accuracy | ±0.005mm |
| Resolution | 0.001mm/0.00005 |
| Read Out | Digital |
Learn more about Klarna
Introducing the Insize 3532 Digital Blade Type A Micrometer, a 75–100 mm (3–4") tool designed to measure the groove diameter of shafts and keyways with precision. The digital readout provides clear results to 0.001 mm (0.00005"), making it easy to verify tolerances at a glance. Built for reliability in busy workshops, it features a non-rotating spindle, a ratchet stop, and LR44 battery with automatic power-off to support consistent measurements all day.
- High-Resolution digital readout: Readings to 0.001 mm (0.00005") with a clear display, enabling quick and accurate verification of shaft and keyway groove dimensions.
- Repeatable measurements with non-rotating spindle and ratchet stop: Ensures consistent contact and force during each measurement, delivering reliable results across multiple checks.
- Versatile functions with optional data output: Includes mm/inch switching, ABS/INC modes, on/off and set options, plus an optional data output cable (7302-SPC6) for easy data logging and integration with measurement systems.
This micrometer’s 75–100 mm range covers common shaft and keyway applications, making it a practical choice for manufacturing, maintenance, and quality control. Its combination of precise resolution, reliable repeatability, and convenient digital features helps you work faster, reduce rework, and maintain consistent results across operators and jobs.
| Range (mm) | 75-100 |
| Range (Inch) | 3-4 |
| b | 69.5 |
| Accuracy | ±0.005mm |
| Resolution | 0.001mm/0.00005 |
| Read Out | Digital |
| 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: Insize Digital Blade Type B Micrometers (3532 Series (Insize)
View full collection →You are viewing 3532-100A. Click any other SKU to view its full details.
| Product SKU | Range (mm) | Range (Inch) | Accuracy | Price | Stock | Order |
|---|---|---|---|---|---|---|
| 3532-25A | 0-25 | 0-1 | ±0.004mm | £373.04 | 4-5 days | |
| 3532-50A | 25-50 | 1-2 | ±0.004mm | £397.15 | 4-5 days | |
| 3532-75A | 50-75 | 2-3 | ±0.005mm | £423.55 | 4-5 days | |
| 3532-100A Viewing | 75-100 | 3-4 | ±0.005mm | £449.95 | 4-5 days | |
| 3532-25BA | 0.25 | 0-1 | ±0.004mm | £373.04 | 4-5 days | |
| 3532-50BA | 25-50 | 1-2 | ±0.004mm | £397.15 | 4-5 days |
No products match your filters.



