--- product_id: 354064497 title: "Mr. Pen Aluminum Triangular Engineer Scale Ruler, 30cm, 1:20-1:125" brand: "mr. pen" price: "£16.50" currency: GBP in_stock: false reviews_count: 5 category: "Mr. Pen" url: https://www.desertcart.co.uk/products/354064497-mr-pen-aluminum-triangular-engineer-scale-ruler-30cm-1-20 store_origin: GB region: United Kingdom --- # Color-coded for quick scale selection 30cm precision length High-impact aluminum build Mr. Pen Aluminum Triangular Engineer Scale Ruler, 30cm, 1:20-1:125 **Brand:** mr. pen **Price:** £16.50 **Availability:** ❌ Out of Stock ## Summary > 📐 Elevate your drafting game with precision that lasts a lifetime! ## Quick Answers - **What is this?** Mr. Pen Aluminum Triangular Engineer Scale Ruler, 30cm, 1:20-1:125 by mr. pen - **How much does it cost?** £16.50 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/354064497-mr-pen-aluminum-triangular-engineer-scale-ruler-30cm-1-20) ## Best For - mr. pen enthusiasts ## Why This Product - Trusted mr. pen brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Laser-Cut Accuracy:** Engraved markings that never fade or scratch off, ensuring lifelong precision. - • **Versatile Scale Range:** Six essential scales from 1:20 to 1:125 for all your architectural and engineering needs. - • **Precision Meets Durability:** Crafted from high-impact aluminum to withstand daily use without wear. - • **Engineered for Professionals:** Ideal for architects, engineers, designers, and students who demand reliability and style. - • **Effortless Scale Identification:** Color-coded triangular design lets you switch scales instantly, saving valuable time. ## Overview The Mr. Pen Aluminum Triangular Engineer Scale Ruler is a 30cm metric tool designed for architects, engineers, and designers. Made from durable high-impact aluminum, it features laser-cut, fade-resistant markings across six color-coded scales (1:20 to 1:125) for quick, accurate measurements on architectural drawings, blueprints, and orthographic projections. ## Description Mr. Pen- Triangular Scale Is Designed To Equip Architects, Engineers, Artists, Designers, Students, Teacher With The Right Tools For Their Various Projects.The Package Includes:30cm Metric Engineer Scale:Made From High Impact Aluminum To Last ForeverLaser Cut Prints For Accuracy And Durability. The Prints Will Not Wipe Or Scratch OffScale: 1:20, 1:25, 1:50, 1:75, 1:100, 1:125Designed To Facilitate The Drafting And Measuring Of Architectural Drawings, Such As Floor Plans, Blue Prints, And Orthographic ProjectionsColor Coded Triangular Scale For Easy And Quick Selection Of The Desired Scale Review: This is a decent, well made product. The markings (on my scale, at least) were clearly etched on - I can feel the slight indentation of the metal where the markings are placed. The markings are clear and crisp. The color coding on each side of the scale is a nice feature. I would suggest that the seller take another look at this page and fix some of the product photos and descriptive copy. It almost appears as if they just used the same page for both their metric and imperial scales. Some of the pictures show imperial scales, while this item is definitely METRIC scaled. I'm not complaining about the product I got - I ordered a metric scale, and that's what I got. But people might be mislead as to what they are getting - even the text has some ambiguities. I do agree with some of the other reviewers in noting that the ends of the ruler can be a bit sharp. A minute or so spent with some fine grit sandpaper will take care of this, but I think that this should be done at the manufacturing stage. Review: Well-made. Smooth surfaces with accurate and easy to read scales. ## Features - 30cm Engineer Scale Designed To Facilitate The Drafting And Measuring Of Architectural Drawings, Such As Floor Plans, Blue Prints, And Orthographic Projections - Triangular Ruler Made From High Impact Aluminum, Build To Last - Engineer Ruler With Durable Laser Cut Prints For Accuracy. They Will Not Wipe Or Scratch Off Ever - Color Coded Triangular Scale For Easy And Quick Selection Of The Desired Scale - Scale: 1:20, 1:25, 1:50, 1:75, 1:100, 1:125 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07DNKNLSJ | | Best Sellers Rank | #160,244 in Office Products ( See Top 100 in Office Products ) #28 in Triangular Scales | | Manufacturer | Mr. Pen | | Manufacturer reference | SE01 | | Product Dimensions | 30 x 8.6 x 0.1 cm; 100 g | ## Product Details - **Brand:** Mr. Pen - **Colour:** White - **Material:** Aluminum - **Product dimensions:** 8.6W centimeters - **Style:** Triangular ## Images ![Mr. Pen Aluminum Triangular Engineer Scale Ruler, 30cm, 1:20-1:125 - Image 1](https://m.media-amazon.com/images/I/413+TKn-c0L.jpg) ![Mr. Pen Aluminum Triangular Engineer Scale Ruler, 30cm, 1:20-1:125 - Image 2](https://m.media-amazon.com/images/I/419A23YDtRL.jpg) ![Mr. Pen Aluminum Triangular Engineer Scale Ruler, 30cm, 1:20-1:125 - Image 3](https://m.media-amazon.com/images/I/41FW-tnoDVL.jpg) ![Mr. Pen Aluminum Triangular Engineer Scale Ruler, 30cm, 1:20-1:125 - Image 4](https://m.media-amazon.com/images/I/41JnYF0bwJL.jpg) ![Mr. Pen Aluminum Triangular Engineer Scale Ruler, 30cm, 1:20-1:125 - Image 5](https://m.media-amazon.com/images/I/514iX-SUW4L.jpg) ## Questions & Answers **Q: Do markings stay on this ruler?** A: It seems your mileage may vary. Some people say they received a ruled with etched/engraved markings. I just received one of these and the markings are just printed on top of the aluminum - they are not etched could come off. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by M***Z on 21 July 2020* This is a decent, well made product. The markings (on my scale, at least) were clearly etched on - I can feel the slight indentation of the metal where the markings are placed. The markings are clear and crisp. The color coding on each side of the scale is a nice feature. I would suggest that the seller take another look at this page and fix some of the product photos and descriptive copy. It almost appears as if they just used the same page for both their metric and imperial scales. Some of the pictures show imperial scales, while this item is definitely METRIC scaled. I'm not complaining about the product I got - I ordered a metric scale, and that's what I got. But people might be mislead as to what they are getting - even the text has some ambiguities. I do agree with some of the other reviewers in noting that the ends of the ruler can be a bit sharp. A minute or so spent with some fine grit sandpaper will take care of this, but I think that this should be done at the manufacturing stage. ### ⭐⭐⭐⭐⭐ Review *by A***. on 13 April 2025* Well-made. Smooth surfaces with accurate and easy to read scales. ### ⭐⭐⭐⭐⭐ Review *by D***C on 13 January 2025* This is by far my favorite scale ruler, much better than the plastic ones I have purchased in the past. 10/10 would buy again. ## Frequently Bought Together - Partyreal CA11755 - Staedtler 12-Inches Engineers Triangular Scale (98718-34BK) - Mr. Pen Architectural Scale Ruler, 12 Inch, White, Contractor's Scaling Ruler, Drawing & Drafting Tool --- ## 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.co.uk/products/354064497-mr-pen-aluminum-triangular-engineer-scale-ruler-30cm-1-20](https://www.desertcart.co.uk/products/354064497-mr-pen-aluminum-triangular-engineer-scale-ruler-30cm-1-20) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-14*