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30-300mm Digital Inside Groove Caliper - 1120 Series (Insize)
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Description
The Insize 1120 Digital Inside Groove Caliper is a precision measuring tool designed to size internal grooves and bore features with confidence. Crafted from stainless steel for long tool life, it stands up to daily shop wear while delivering clear, readable measurements at a glance.
This model handles internal groove diameters up to 300 mm (12 in) with a tight 0.01 mm (0.0005 in) resolution. It offers effortless switching between millimeters and inches, a preset function for repeatable measurements, and automatic power-off to conserve the battery. Optional accessories include a depth stop (code 6143) and a data output cable (code 7302-SPC5A) for enhanced workflow integration.
- Digital readout with 0.01 mm resolution: fast, precise measurements you can trust, with easy mm/inch conversion and a convenient preset for repeatable checks.
- Wide groove range up to 300 mm (12 in) and rugged stainless steel construction: versatile and durable for repeated use in demanding machine shop environments.
- SPC data output and depth-stop accessories available: enables seamless data capture and repeatable depth measurements, improving traceability and quality checks.
The 1120 Digital Inside Groove Caliper combines simplicity with reliability, helping you speed up setup, reduce rework, and deliver consistent results across parts and operators. Its robust build, precise digital readout, and compatible data options make it a dependable choice for engineers, inspectors, and machinists alike.
Part Numbers
- Protool Part Number
- 1120-300A
- Brand
- Insize
- Category
- Measuring Tool
Delivery
Free UK mainland delivery on orders over £50 ex VAT. In-stock items ordered before 4:30pm are dispatched the same working day. Full delivery information.
Returns
14-day returns on unused stock items in original packaging. Special-order and bespoke tooling is non-returnable. Read our returns policy.
Technical Support
Over 30 years of machining experience behind the counter. Call 01732 887334, Mon–Thurs 8:30–17:30, Fri 8:30–16:30.
Trade Accounts
Credit accounts, contract pricing and scheduled call-off orders available for trade customers. Apply for an account.
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 Groove Calipers - 1120 Series (Insize)
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