--- product_id: 67349435 title: "Silva Inclination and Card Knife 451131 Unico One Size" brand: "silva" price: "262.62 DT" currency: TND in_stock: true reviews_count: 13 url: https://www.desertcart.tn/products/67349435-silva-inclination-and-card-knife-451131-unico-one-size store_origin: TN region: Tunisia --- # Calculate travel time at known speed 2.0 kg durable cast iron build 8 map scales 1:15,000–1:750,000 Silva Inclination and Card Knife 451131 Unico One Size **Brand:** silva **Price:** 262.62 DT **Availability:** ✅ In Stock ## Summary > 🧭 Master your adventure with Silva’s timeless precision! ## Quick Answers - **What is this?** Silva Inclination and Card Knife 451131 Unico One Size by silva - **How much does it cost?** 262.62 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/67349435-silva-inclination-and-card-knife-451131-unico-one-size) ## Best For - silva enthusiasts ## Why This Product - Trusted silva brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Ergonomic Wooden Handle:** Comfort grip ensures steady control during extended navigation sessions. - • **Precision Route Measurement:** Navigate confidently with 8 versatile map scales tailored for any terrain. - • **Integrated Inclination Gauge:** Measure slopes and inclines effortlessly for smarter route planning. - • **Portable & Lightweight Design:** Compact 10x10 cm size makes it your perfect on-the-go navigation companion. - • **Robust Cast Iron Construction:** Engineered for durability and longevity, built to withstand rugged outdoor use. ## Overview The Silva Inclination and Card Knife 451131 Unico is a premium analogue navigation tool featuring 8 selectable map scales from 1:15,000 to 1:750,000. Crafted from durable cast iron with a comfortable wooden handle, it allows precise route measurement and travel time calculation at known speeds. Compact and portable, it’s designed for serious outdoor enthusiasts who demand reliability and accuracy in their navigation gear. ## Description Traditional map knife with metal body and grippy handle. With the most common standards. The Silva Map Measurer is an analogue navigation instrument with a pointer. Choose one of the eight map scales between 1:15. 000 and 1:750 000 according to your map and it measures your planned route. At a known speed, you can then calculate how long it will take for the rest of the journey to complete. Review: Works perfectly with OS maps - This is perfect for use on OS maps. I can’t understand why people would complain it doesn’t function in miles when maps are Kilometres Review: Faultless - This is a quality product, as one might expect from Silva. Yes it is more expensive than the multiple cheap alternatives, but it has a huge advantage : it works faultlessly. I learned the hard way, I initially bought a cheapo: the mechanism was so stiff it nearly cut through the maps, and daft though it may seem, the scale was wrong ( 6 miles read off an O. S. Map showed as 7.5 on the 1:25000 read off, 6.0 on the 1:20000 read off - the map was an Explorer 1:25000. One downside, it only does Km. Hey hey I'll have to go metric at last! ## Features - Analogue navigation instrument - Card scales between 1:15,000 and 1:750,000 - At a known speed, you can then also calculate how long it takes - Weight 2. 000g - Included components: inclination and map gauge - Cast iron with wooden handles ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01KZNFYSO | | Best Sellers Rank | 200,559 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 103 in Charts & Maps | | Brand | Silva | | Brand Name | Silva | | Customer Reviews | 3.9 out of 5 stars 173 Reviews | | Global Trade Identification Number | 07318860195549 | | Included Components | Inclination and map knife | | Item Dimensions L x W | 10L x 10W centimetres | | Item Type Name | Inclination and map knife | | Manufacturer | Silva | | Manufacturer Part Number | 30-0000037507 | | Map Scale | [1:15000, 1:750000] | | Map scale | [1:15000, 1:750000] | | Material | Cast Iron | | Material Type | Cast Iron | | Model Number | 451131 | | Number of items | 1 | | Product dimensions | 10L x 10W centimetres | | Special Features | Portable | | Special feature | Portable | | Unit Count | 1.0 count | ## Images ![Silva Inclination and Card Knife 451131 Unico One Size - Image 1](https://m.media-amazon.com/images/I/81Mn-HROC7L.jpg) ![Silva Inclination and Card Knife 451131 Unico One Size - Image 2](https://m.media-amazon.com/images/I/31ok01lpwdL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works perfectly with OS maps *by A***B on 16 September 2018* This is perfect for use on OS maps. I can’t understand why people would complain it doesn’t function in miles when maps are Kilometres ### ⭐⭐⭐⭐ Faultless *by J***S on 27 April 2021* This is a quality product, as one might expect from Silva. Yes it is more expensive than the multiple cheap alternatives, but it has a huge advantage : it works faultlessly. I learned the hard way, I initially bought a cheapo: the mechanism was so stiff it nearly cut through the maps, and daft though it may seem, the scale was wrong ( 6 miles read off an O. S. Map showed as 7.5 on the 1:25000 read off, 6.0 on the 1:20000 read off - the map was an Explorer 1:25000. One downside, it only does Km. Hey hey I'll have to go metric at last! ### ⭐⭐⭐ Buy e cheaper one *by C***E on 20 April 2026* I thought this would be better quality than the the cheaper ones. It’s not save your money --- ## 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.tn/products/67349435-silva-inclination-and-card-knife-451131-unico-one-size](https://www.desertcart.tn/products/67349435-silva-inclination-and-card-knife-451131-unico-one-size) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-07*