--- product_id: 198382229 title: "Groz 4\" Outside Spring Caliper, Bow-Spring Steel Calipers for Measuring Shaft, Dowel and Pipe OD, Roller Pivot with Solid Adjusting Nut, 100mm Capacity, Matte Finish (01411)" brand: "groz" price: "R712" currency: ZAR in_stock: true reviews_count: 10 url: https://www.desertcart.co.za/products/198382229-groz-4-outside-spring-caliper-bow-spring-steel-calipers-measuring store_origin: ZA region: South Africa --- # 100mm / 4" max range Roller pivot for parallel leg movement Hardened bow spring tension Groz 4" Outside Spring Caliper, Bow-Spring Steel Calipers for Measuring Shaft, Dowel and Pipe OD, Roller Pivot with Solid Adjusting Nut, 100mm Capacity, Matte Finish (01411) **Brand:** groz **Price:** R712 **Availability:** βœ… In Stock ## Summary > πŸ› οΈ Measure like a pro, every time β€” don’t let your precision slip away! ## Quick Answers - **What is this?** Groz 4" Outside Spring Caliper, Bow-Spring Steel Calipers for Measuring Shaft, Dowel and Pipe OD, Roller Pivot with Solid Adjusting Nut, 100mm Capacity, Matte Finish (01411) by groz - **How much does it cost?** R712 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/198382229-groz-4-outside-spring-caliper-bow-spring-steel-calipers-measuring) ## Best For - groz enthusiasts ## Why This Product - Trusted groz brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Smooth Operator:** Roller pivot and fulcrum stud prevent side deflection for true parallel leg action. - β€’ **Lock-In Accuracy:** Hardened bow spring maintains constant tension for drift-free dimension holding. - β€’ **Fine-Tuned Adjustments:** Solid one-piece adjusting nut offers quick, precise, and slip-free settings. - β€’ **Built to Last & Impress:** Forged alloy steel with matte finish combines durability with a professional, glare-free look. - β€’ **Precision in Every Curve:** Inward-curving bow legs ensure steady, repeatable OD measurements up to 4" / 100mm. ## Overview The Groz 4" Outside Spring Caliper is a premium alloy steel measuring tool designed for professionals and serious hobbyists. With a 100mm capacity, hardened bow spring tension, and roller pivot mechanism, it delivers accurate, repeatable outside diameter measurements on shafts, dowels, pipes, and bolts. Its solid adjusting nut and matte finish ensure durability and ease of use, making it an essential precision companion for machinists, woodturners, and toolmakers who demand reliability and finesse. ## Description The Groz 4" Outside Spring Caliper is built to transfer and compare external measurements on round and curved stock. Its bow-shaped legs curve inward at the tips so they wrap around the workpiece and read true outside diameters on shafts, dowels, rods, pipe, bolt heads, and small cylindrical parts up to 4" / 100mm.A hardened bow spring keeps constant tension against the solid adjusting nut, locking your setting in place as you move from the part to a rule or micrometer. The roller pivot and fulcrum stud, with its large bearing surface, prevent side deflection so both legs swing in true parallel for accurate, repeatable readings.Forged from selected steel with a matte finish, the 01411 is a dependable bench companion for machinists, toolmakers, model engine builders, watchmakers, and home shop users who need quick, reliable OD checks. Review: well made - a professional tool and only a couple bucks more than the cheap ones. - This replaces a vintage set of outside calipers that were finally worn out after at least one lifetime of use before I got them. The Groz outside calipers feel very solid and works easily. First of all, the edges are all rounded -- it feels great in the hand, and no sharp edges. Metal is polished to a medium satin and the tool came covered in a nice coat of oil, so no rust. The adjustment nut knurling is sufficient for grip and not sharp - the screw itself is fine enough to get a snug slip-fit on parts (accuracy), the tension on the spring is firm but not overly tight. And the size is perfect for a shop apron pocket or just to live on the pegboard beside the lathe. Speaking of which, I might get another - one for the wood lathe, one for the metal lathe. very nice tool that should perform well and last. Review: Perfect for Wood turning! - I needed an inexpensive tool for wood turning. These work great. Easy to adjust but holds a set dimension well. They are well made and the tips that are key to accurate dimensioning come together precisely and are repeatable. Not for ultra precision work but great for the woodshop. Reasonable cost. ## Features - MEASURE OUTSIDE DIAMETERS WITH CONFIDENCE - Inward-curving bow legs grip the OD of shafts, dowels, rods, pipes, bolts, and bores up to 4" / 100mm with steady, repeatable contact. - BOW-SPRING TENSIONING - Hardened bow spring keeps the legs under constant load against the adjusting nut, holding your set dimension while you transfer it to a rule, micrometer, or workpiece. - ROLLER PIVOT AND FULCRUM STUD - Smooth roller pivot pairs with a fulcrum stud featuring a large bearing surface that resists side deflection for true, parallel leg movement. - SOLID ADJUSTING NUT - One-piece solid nut threads cleanly along the adjusting screw for fine, drift-free settings and quick repositioning between measurements. - SELECTED STEEL BUILD, MATTE FINISH - Forged from selected steel with a glare-reducing matte finish, sized for machinists, toolmakers, model engine builders, and watchmakers. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B077XHDCHV | | Best Sellers Rank | #275,668 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #76 in Joint Calipers & Dividers | | Brand | Groz | | Brand Name | Groz | | Customer Reviews | 4.6 out of 5 stars 269 Reviews | | Global Trade Identification Number | 08901486014111 | | Item Type Name | Groz 01411 4" Spring Outside Caliper | | Item Weight | 0.05 kg | | Manufacturer | Groz | | Material | Alloy Steel | | Material Type | Alloy Steel | | Measurement Accuracy | +/-0.00015 inches | | Model | 1411 | | Number of Items | 1 | | Part Number | 1411 | | Range | 4 inches | | Unit Count | 1 Count | ## Product Details - **Brand:** Groz - **Material:** Alloy Steel - **Measurement Accuracy:** +/-0.00015 inches - **Range:** 4 inches - **Unit Count:** 1 Count ## Images ![Groz 4" Outside Spring Caliper, Bow-Spring Steel Calipers for Measuring Shaft, Dowel and Pipe OD, Roller Pivot with Solid Adjusting Nut, 100mm Capacity, Matte Finish (01411) - Image 1](https://m.media-amazon.com/images/I/61wMozeGr0L.jpg) ![Groz 4" Outside Spring Caliper, Bow-Spring Steel Calipers for Measuring Shaft, Dowel and Pipe OD, Roller Pivot with Solid Adjusting Nut, 100mm Capacity, Matte Finish (01411) - Image 2](https://m.media-amazon.com/images/I/61emfndv0WL.jpg) ![Groz 4" Outside Spring Caliper, Bow-Spring Steel Calipers for Measuring Shaft, Dowel and Pipe OD, Roller Pivot with Solid Adjusting Nut, 100mm Capacity, Matte Finish (01411) - Image 3](https://m.media-amazon.com/images/I/81zufyK9NEL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ well made - a professional tool and only a couple bucks more than the cheap ones. *by J***R on December 16, 2022* This replaces a vintage set of outside calipers that were finally worn out after at least one lifetime of use before I got them. The Groz outside calipers feel very solid and works easily. First of all, the edges are all rounded -- it feels great in the hand, and no sharp edges. Metal is polished to a medium satin and the tool came covered in a nice coat of oil, so no rust. The adjustment nut knurling is sufficient for grip and not sharp - the screw itself is fine enough to get a snug slip-fit on parts (accuracy), the tension on the spring is firm but not overly tight. And the size is perfect for a shop apron pocket or just to live on the pegboard beside the lathe. Speaking of which, I might get another - one for the wood lathe, one for the metal lathe. very nice tool that should perform well and last. ### ⭐⭐⭐⭐⭐ Perfect for Wood turning! *by D***. on January 20, 2024* I needed an inexpensive tool for wood turning. These work great. Easy to adjust but holds a set dimension well. They are well made and the tips that are key to accurate dimensioning come together precisely and are repeatable. Not for ultra precision work but great for the woodshop. Reasonable cost. ### ⭐⭐⭐⭐⭐ Very good calipers and a great value. *by A***R on March 10, 2019* I needed several small outside calipers to turn handles for woodworking tools. I will be doing 30 handles using the calipers to copy a "master". Being able to set a caliper for each diameter on the master was a great aid. I was concerned about quality given their reasonable price. But, my concern quickly disappeared upon examining the Groz calipers. The Groz 4" outside calipers worked perfectly. Great Value and they will be a useful addition to my tool set. Five Star form and function. ## Frequently Bought Together - Groz 01411 4" Spring Outside Caliper, Matte Finish, with Solid Nut - Big Horn 19052C 8-Inch Outside Caliper - POWERTEC Plastic Center Finder Tool for 8 inch Square, Round, Octagon and 5-3/4 inch Hexagon, Measuring Tools for Dowels Drilling on Drill Press, Wood Lathe, Woodworking, Carpenter (71080) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.za/products/198382229-groz-4-outside-spring-caliper-bow-spring-steel-calipers-measuring](https://www.desertcart.co.za/products/198382229-groz-4-outside-spring-caliper-bow-spring-steel-calipers-measuring) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-08-06*