30-40mm 1.18-1.57" Three Point Internal Bore Micrometer - 3227 Series (Insize)

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30-40mm 1.18-1.57" Three Point Internal Bore Micrometer - 3227 Series (Insize)

SKU:3227-40

Specification

Range (mm)	30-40
Range (inch)	1.18-1.57
Setting Ring	40mm (included)
b	14
Accuracy	Â±0.004mm
Graduation	0.03mm

£325.57

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4–5 days estimated lead time — subject to availability

Free delivery over £50 ex VAT

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01732 887334

Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

The Insize 3227 Series Three Point Internal Bore Micrometer is a precision measuring instrument designed to measure inside diameters with repeatable accuracy. It’s ideal for engineers, technicians, quality inspectors, and hobbyists who need fast, reliable bore readings in a compact, user-friendly design.

Equipped with three-point contact, carbide measuring faces, and a ratchet stop, this micrometer delivers wear-resistant performance across repeated measurements. The tool covers a range up to 300 mm with a fine 0.005 mm graduation and arrives with a setting ring to speed calibration and setup.

Three-point internal contact: Provides stable, repeatable readings by evenly distributing contact inside the bore, reducing deformation and improving accuracy across the bore profile.
Carbide measuring faces for wear resistance: Extends tool life and maintains precise measurements when working with hard or tough materials.
Ratchet stop and setting ring for consistent setup: Ensures uniform measuring pressure and quick, reliable calibration, helping you move through inspections with confidence.

This bore micrometer helps you maintain tight tolerances and streamline your workflow. Durable construction reduces downtime from re-measurement, while precise graduations and easy calibration support faster, more dependable inspections across production runs, quality checks, and maintenance tasks.

Range (mm)	30-40
Range (inch)	1.18-1.57
Setting Ring	40mm (included)
b	14
Accuracy	Â±0.004mm
Graduation	0.03mm
Read Out	Analogue
IP Rating	IP65
mm or Inch	mm\|inch
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

★★★★★

first place we look

honest about stock and prices are competitive.

Phil

★★★★★

Polite and helpful

Staff are very helpful and polite.Goods that were in stock were dispatched same day and back orders were quick in coming through .

Graham

★★★★★

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: Three Point Internal Bore Micrometers - 3227 Series (Insize)

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You are viewing 3227-40. Click any other SKU to view its full details.

Product SKU	Metric Range (mm)	Metric Range (Inch)	Ip Rating	mm or Inch	Price	Stock

3227-8	46240	0.24-0.31	IP65	mm\|inch	£273.39	4-5 days
3227-10	46303	0.31-0.39	IP65	mm\|inch	£273.39	4-5 days
3227-12	46366	0.39-0.47	IP65	mm\|inch	£273.39	4-5 days
3227-16	42705	0.47-0.63	IP65	mm\|inch	£219.13	4-5 days
3227-20	16-20	0.63-0.79	IP65	mm\|inch	£219.13	4-5 days
3227-25	20-25	0.79-0.98	IP65	mm\|inch	£285.91	4-5 days
3227-30	25-30	0.98-1.18	IP65	mm\|inch	£285.91	4-5 days
3227-40 Viewing	30-40	1.18-1.57	IP65	mm\|inch	£325.57	4-5 days
3227-50	40-50	1.57-1.97	IP65	mm\|inch	£354.78	4-5 days
3227-63	50-63	1.97-2.48	IP65	mm\|inch	£393.39	4-5 days
3227-75	62-75	2.44-2.95	IP65	mm\|inch	£408.00	4-5 days
3227-88	75-88	2.95-3.46	IP65	mm\|inch	£427.83	4-5 days
3227-100	87-100	3.43-3.94	IP65	mm\|inch	£449.74	4-5 days
3227-125	100-125	3.94-4.92	IP65	mm\|inch	£563.48	4-5 days
3227-150	125-150	4.92-5.91	IP65	mm\|inch	£636.52	4-5 days
3227-175	150-175	5.91-6.89	IP65	mm\|inch	£705.39	4-5 days
3227-200	175-200	6.89-7.87	IP65	mm\|inch	£814.96	4-5 days
3227-225	200-225	7.87-8.86	IP65	mm\|inch	£1,039.30	4-5 days
3227-250	225-250	8.86-9.84	IP65	mm\|inch	£1,173.91	4-5 days
3227-275	250-275	9.84-10.83	IP65	mm\|inch	£1,361.74	4-5 days
3227-300	275-300	10.83-11.81	IP65	mm\|inch	£1,581.91	4-5 days