--- product_id: 814445623 title: "Roughness Comparator Set, Ra Value Sample Blocks Kit, 30 Pieces for Turning Milling Grinding Polishing, SAE Compliant Inspection Gages for Metalworking" brand: "shophubio" price: "E£ 16496" currency: EGP in_stock: true category: "Shophubio" url: https://www.desertcart.com.eg/products/814445623-roughness-comparator-set-ra-value-sample-blocks-kit-30-pieces store_origin: EG region: Egypt --- # Compact wallet-style holder 30 precision Ra sample blocks SAE-compliant calibrated standards Roughness Comparator Set, Ra Value Sample Blocks Kit, 30 Pieces for Turning Milling Grinding Polishing, SAE Compliant Inspection Gages for Metalworking **Brand:** shophubio **Price:** E£ 16496 **Availability:** ✅ In Stock ## Summary > ⚙️ Elevate your metalwork with precision you can feel — don’t settle for less! ## Quick Answers - **What is this?** Roughness Comparator Set, Ra Value Sample Blocks Kit, 30 Pieces for Turning Milling Grinding Polishing, SAE Compliant Inspection Gages for Metalworking by shophubio - **How much does it cost?** E£ 16496 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.eg](https://www.desertcart.com.eg/products/814445623-roughness-comparator-set-ra-value-sample-blocks-kit-30-pieces) ## Best For - shophubio enthusiasts ## Why This Product - Trusted shophubio brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted by Pros:** Ideal for machinists, inspectors, and toolroom techs demanding reliable inspection. - • **Portable Precision:** Compact, lightweight wallet design keeps all 30 samples organized on-the-go. - • **True-to-Touch Texture:** Experience authentic feel and appearance calibrated to industry specs. - • **Instant Surface Validation:** Quickly compare machined parts to exact Ra standards for flawless finishes. - • **Streamline Quality Control:** Speeds up inspection, setup, and troubleshooting with tactile and visual checks. ## Overview The Roughness Comparator Set includes 30 SAE-compliant Ra sample blocks that replicate the exact texture and appearance of machined surfaces. Housed in a compact wallet-style holder, this portable kit enables machinists and inspectors to quickly and accurately compare surface finishes, accelerating quality control and process optimization in turning, milling, grinding, and polishing applications. ## Description Specifications:The exterior roughness comparator is used to check the smoothness of mechanical workpieces by comparison, while the visual inspection or microscope is used to compare and test the degree of exterior roughness.features:RUG-100: notebook sample block (turning, end milling, flat milling, exterior grinding, external grinding, polishing)The notebook sample block contains standards for the six most important processing for methods among the popular "AA" values. All 30 samples were calibrated with for uAA (arithmetic mean) and metric equivalent um Ra.Sample exterior roughness comparator 30 pieces of composite bag fixing gauges3 Flat grinding: 2,4,8; 7/8 "x 3/8" each; Each type of exterior finish is a true and consistent reproduction, with a true idea of the feel, appearance and texture of machined partsCompare conveniently and quickly; Comply with S.A.E and specificationsOverall wallet size (fully enclosed) L x W x H (inches): 6 x 3 x 3/8 * estimated *; Unit weight: 14 ounces * estimate only*The package includes:A set of 30 sample pieces ## Features - [ COMPARISON] Use as a portable roughness comparator to visually and tactilely compare machined parts against standard Ra samples; speeds inspection, process setup and troubleshooting while keeping Ra values at hand. - [TRUE REPRODUCTION OF FINISH] Each sample is a consistent reproduction of feel, appearance and texture of machined parts; calibrated to Ra arithmetic mean and metric um values and produced to meet S.A.E. specifications. - [COMPACT WALLET FORMAT] Compact wallet-style holder measures about 6 x 3 x 3/8 inches and weighs approximately 14 ounces, keeping all roughness blocks organized and protected for bench, toolbox or field use. - [WHO BENEFITS] Suited for machinists, inspectors, toolroom technicians, trainers and buyers who need a portable roughness comparator and Ra reference for inspection, training and process control. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0GT6F3QJ4 | | Date First Available | March 19, 2026 | | Item Weight | 13.8 ounces | | Item model number | 02788ARSK3T857QHYVP5U76UQ3M | | Manufacturer | Shophubio | | Product Dimensions | 5.91 x 3.15 x 0.79 inches | ## Images ![Roughness Comparator Set, Ra Value Sample Blocks Kit, 30 Pieces for Turning Milling Grinding Polishing, SAE Compliant Inspection Gages for Metalworking - Image 1](https://m.media-amazon.com/images/I/81ozXOBxAkL.jpg) ![Roughness Comparator Set, Ra Value Sample Blocks Kit, 30 Pieces for Turning Milling Grinding Polishing, SAE Compliant Inspection Gages for Metalworking - Image 2](https://m.media-amazon.com/images/I/81aK5El235L.jpg) ![Roughness Comparator Set, Ra Value Sample Blocks Kit, 30 Pieces for Turning Milling Grinding Polishing, SAE Compliant Inspection Gages for Metalworking - Image 3](https://m.media-amazon.com/images/I/71ZU-VUw1tL.jpg) ![Roughness Comparator Set, Ra Value Sample Blocks Kit, 30 Pieces for Turning Milling Grinding Polishing, SAE Compliant Inspection Gages for Metalworking - Image 4](https://m.media-amazon.com/images/I/81jj-pf+prL.jpg) ![Roughness Comparator Set, Ra Value Sample Blocks Kit, 30 Pieces for Turning Milling Grinding Polishing, SAE Compliant Inspection Gages for Metalworking - Image 5](https://m.media-amazon.com/images/I/71byNMHSuIL.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.eg/products/814445623-roughness-comparator-set-ra-value-sample-blocks-kit-30-pieces](https://www.desertcart.com.eg/products/814445623-roughness-comparator-set-ra-value-sample-blocks-kit-30-pieces) --- *Product available on Desertcart Egypt* *Store origin: EG* *Last updated: 2026-05-25*