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

25-200mm Digital Inside Point Caliper - 1121 Series (Insize)
| Range (mm) | 25-200 |
| A | 5 |
| B | 12.5 |
| C | 16 |
| Accuracy | ±0.04mm |
| Resolution | 0.01mm/0.0005 |
Learn more about Klarna
The Insize 1121 Digital Inside Point Vernier Caliper is a precision instrument for measuring the inside diameter of grooves. It provides fast, easy-to-read digital results and is designed for a wide range of users—from engineers and machinists to buyers, tradespeople, hobbyists, and DIY enthusiasts—who need accurate inside measurements quickly.
Constructed from stainless steel for long tool life and durability in machine shop conditions, this caliper offers a reliable way to verify groove diameters. The digital display speeds readings, and you can switch between millimeters and inches with a simple press. When you use the optional SPC data output, measurements can be captured digitally with a range up to 300 mm. Optional depth stop (6143) and data output cable (7302-SPC5A) expand its capabilities for repeatable, documented inspections.
- Durable stainless steel construction: Long tool life and resistance to wear in machine shop environments, ensuring consistent performance over time.
- High-precision inside diameter measurement: Measures grooves with 0.01 mm (0.0005") resolution for repeatable, reliable fits.
- Optional SPC data output and extended range: With the SPC data cable option, measurements can be captured digitally and the range extends up to 300 mm for larger grooves; supports easy mm/inch switching and preset functions for quick, repeatable use.
With the 1121 Digital Inside Point Caliper, you gain a dependable tool for accurate groove measurements, streamlined data capture, and day-to-day reliability. The stainless steel build stands up to busy shop use, while the digital display reduces reading errors and speeds measurements. Optional accessories like the depth stop and SPC data cable enable repeatable measurements and easy documentation, helping you tighten tolerances and improve overall workflow.
| Range (mm) | 25-200 |
| A | 5 |
| B | 12.5 |
| C | 16 |
| Accuracy | ±0.04mm |
| Resolution | 0.01mm/0.0005 |
| Read Out | Digital |
| Data Output | Yes |
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: Digital Inside Point Calipers - 1121 Series (Insize)
View full collection →You are viewing 1121-200A. Click any other SKU to view its full details.
| Product SKU | Range (mm) | Accuracy | Resolution | Price | Stock | Order |
|---|---|---|---|---|---|---|
| 1121-150A | 24-150 | ±0.04mm | 0.01mm/0.0005 | £184.80 | 4-5 days | |
| 1121-3001A | 50-300 | ±0.06mm | 0.01mm/0.0005 | £351.23 | 4-5 days | |
| 1121-200A Viewing | 25-200 | ±0.04mm | 0.01mm/0.0005 | £196.28 | 4-5 days |
No products match your filters.



