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50-75mm Point Type B Micrometer - 3230 Series (Insize)

SKU:3230-75BA

The 50-75mm Point Type B Micrometer from Insize is a specialized precision tool designed to measure the web thickness of drills, small grooves, and keyways. As part of the 3230 Series, it deliver... Read more ↓
Range (mm)50-75
Setting Ring75mm (included)
Extension Rod150mm
No Measuring Heads4
No Setting Rings2
Accuracy±0.005
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£114.78
Prices shown ex. VAT
4–5 days estimated lead time — subject to availability
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01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

The 50-75mm Point Type B Micrometer from Insize is a specialized precision tool designed to measure the web thickness of drills, small grooves, and keyways. As part of the 3230 Series, it delivers reliable, easy-to-read measurements with a fine 0.01 mm graduation, helping you verify tolerances quickly in metalworking, toolmaking, and maintenance tasks.

Built for daily shop use, this micrometer features carbide measuring faces to resist wear and a ratchet stop to ensure consistent pressure and repeatable readings. It is supplied with 60° setting standards to simplify setup and accurate data transfer (except for the 0–25 mm range). The 3230 Series is designed to stay dependable under routine use and accommodates sizes up to 100 mm.

  • 0.01 mm graduation: Delivers precise, repeatable readings for accurate web thickness measurements of drills, grooves, and keyways, helping you avoid rework.
  • Carbide-tipped measuring faces: Hardened tips resist wear, extending tool life and maintaining measurement accuracy in busy work environments.
  • Ratchet stop and 60° setting standards: Provide consistent force for reliable results and quick, confident setup and data transfer (except the 0–25 mm range).

This micrometer supports streamlined workflows by delivering dependable measurements, reducing downtime from wear or setup inconsistencies, and helping you achieve precise fits in tooling and maintenance applications. With its robust construction and thoughtful features, it’s a trustworthy addition to any machine shop, inspection bench, or maintenance toolkit.

Range (mm) 50-75
Setting Ring 75mm (included)
Extension Rod 150mm
No Measuring Heads 4
No Setting Rings 2
Accuracy ±0.005
Read Out Analogue
mm or Inch mm
Data Output No
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.

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Nice experience staff are very helpful and interested...
Staff are very helpful and interested in providing a good service making us the customer feel valued.
Bill
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first place we look
honest about stock and prices are competitive.
Phil
★★★★★
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Staff are very helpful and polite.Goods that were in stock were dispatched same day and back orders were quick in coming through .
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★★★★★
Buying experience
Phone requests are handled quickly and without any fuss. The website is easy to use and straightforward to order from. It’s especially helpful that it shows real‑time availability, so we don’t need to call to confirm whether parts will arrive.
Jeremy

Full Range: Point Type A Micrometers - 3230 Series (Insize)

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You are viewing 3230-75BA. Click any other SKU to view its full details.

Product SKURange (mm)AccuracyPriceStock Order
3230-25A 0-25±0.004£97.11 4-5 days
3230-100A 75-100±0.005£133.15 4-5 days
3230-75A 50-75±0.005£114.78 4-5 days
3230-50BA 25-50±0.004£105.37 4-5 days
3230-25BA 0-25±0.004£97.11 4-5 days
3230-50A 25-50±0.004£105.37 4-5 days
3230-75BA Viewing50-75±0.005£114.78 4-5 days