--- product_id: 216984001 title: "Mr. Pen Triangle Ruler, Protractor, Math Set - 3 Pack, Square Ruler, Protractor for Geometry" brand: "mr. pen" price: "₹ 1147" currency: INR in_stock: true reviews_count: 11 category: "Mr. Pen" url: https://www.desertcart.in/products/216984001-mr-pen-triangle-ruler-protractor-math-set-3-pack-square store_origin: IN region: India --- # 12-inch precision ruler Transparent design for clear visibility Dual-angle 30°/60° & 45° set squares Mr. Pen Triangle Ruler, Protractor, Math Set - 3 Pack, Square Ruler, Protractor for Geometry **Brand:** mr. pen **Price:** ₹ 1147 **Availability:** ✅ In Stock ## Summary > 📐 Elevate your precision game — because every angle counts! ## Quick Answers - **What is this?** Mr. Pen Triangle Ruler, Protractor, Math Set - 3 Pack, Square Ruler, Protractor for Geometry by mr. pen - **How much does it cost?** ₹ 1147 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/products/216984001-mr-pen-triangle-ruler-protractor-math-set-3-pack-square) ## 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 - • **Durable & Clear:** High-quality sturdy plastic with large, easy-to-read triangles for stress-free use - • **Thoughtful Extras:** Includes a protractor with center cut-out for precise angle readings and a touch of style - • **Engineered for Accuracy:** Etched inch and centimeter markings ensure flawless measurements every time - • **Designed for Professionals:** Ideal for architects, engineers, designers, and students aiming for perfection - • **Precision Meets Versatility:** Three essential geometry tools in one sleek, transparent set ## Overview The Mr. Pen Triangle Ruler, Protractor, Math Set is a premium 3-piece geometry toolkit featuring a 12-inch straight ruler, 45° set square, and 30°/60° set square. Crafted from durable transparent plastic with etched inch and centimeter scales, it offers superior visibility and accuracy. Perfectly suited for professionals and students in architecture, engineering, and design, this set combines functionality with quality to enhance your measurement precision. ## Description desertcart.com : Mr. Pen Triangle Ruler, Protractor, Math Set - 3 Pack, Square Ruler, Protractor for Geometry : Office Products Review: Outstanding product and service. - This is the 2nd triangle set that I ordered for my son who is studying Mechanical engineering. The first set was too large for his project. I kept it for future use. This set was really nice. I really love the quality and value you get with Mr Pen. I will always buy from this company over any other. They always send a thank you card and the cutest little black mustache with your order. My son will love that touch. This little gesture will bring a bit of happiness for him during his stressful studies. It matters. Thank you to Mr Pen Company for you outstanding service and product. These measuring instruments are really nice and will help him greatly. Review: great product - good buy ## Features - Package Includes: One 12-Inch Straight Ruler, One 45 Degree Set Square, And One 30/60 Set Square - Etched With Easy To Read Inch And Centimeter Measurements - Transparent Color For Better Visibility - Large Clear Triangles, High Quality And Sturdy, Protractor Center Cut Out - Wide Application: Math Geometry Tool Set Are Useful Tools For Architects, Engineers, Artists, Designers, Students And Teachers ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0885RD8KN | | Best Sellers Rank | #14,437 in Office Products ( See Top 100 in Office Products ) #36 in Drafting Tools & Drafting Kits | | Brand Name | Mr. Pen | | Color | Transparent | | Customer Reviews | 4.4 4.4 out of 5 stars (1,118) | | Graduation Range | 1/16 Inches | | Item Dimensions L x W | 12"L x 12"W | | Manufacturer | Mr. Pen | | Material Type | Plastic | | Part Number | KG03 | | Style Name | Triangle ruler | | UPC | 850016784629 | ## Product Details - **Brand:** Mr. Pen - **Color:** Transparent - **Graduation Range:** 1/16 Inches - **Material:** Plastic - **Style:** Triangle ruler ## Images ![Mr. Pen Triangle Ruler, Protractor, Math Set - 3 Pack, Square Ruler, Protractor for Geometry - Image 1](https://m.media-amazon.com/images/I/81IHani6ljL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Are these flexible?** A: Unfortunately, no they are not. **Q: what size it the set square?** A: Its right there. **Q: where is the hole to place on the vortex to measure the angle?** A: SUSANLEE, THERE ISN'T ONE. ALSO, THIS SET AND I'VE HAD TWO REPLACEMENTS SINCE THE ORIGINAL PURCHASE ARE DEFECTIVE. I FOUND ALL MEASURMENTS ON EVERY PIECE ARE OFF BY A CONSIDERABLE AMOUNT. I MEASURED THEM AGAINST THREE DIFFERENT RULERS AND EVERY ONE WAS OFF. ADDITIONALLY, THE MEASURMENT MARKS ARE SO FAINT I CAN BARELY SEE THEM EVEN AGAINST BLEACH WHITE PAPER. DON'T WASTE YOUR MONEY. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Outstanding product and service. *by J***E on October 7, 2025* This is the 2nd triangle set that I ordered for my son who is studying Mechanical engineering. The first set was too large for his project. I kept it for future use. This set was really nice. I really love the quality and value you get with Mr Pen. I will always buy from this company over any other. They always send a thank you card and the cutest little black mustache with your order. My son will love that touch. This little gesture will bring a bit of happiness for him during his stressful studies. It matters. Thank you to Mr Pen Company for you outstanding service and product. These measuring instruments are really nice and will help him greatly. ### ⭐⭐⭐⭐⭐ great product *by D***S on November 27, 2025* good buy ### ⭐⭐⭐⭐ Too small *by S***N on April 27, 2025* I bought this because I want to draw right angles on grid paper. Being an American, I thought 17x11 meant inches, non cm. If I had read the specs better, I would have seen they are not that big. My fault; I wanted something that cover an 8 1/2 by 11 inch paper. Because they were less than $5 I didn't do much research. I also wanted to be able to bump a ruler next to it to draw a line, but they are so thin that a good ruler with cork backing is too tall to do that. Again my fault, but if that is what you need, spend a few $$ more. ## Frequently Bought Together - Mr. Pen Triangle Ruler, Protractor, Math Set - 3 Pack, Square Ruler, Protractor for School Geometry - Architectural Scale Ruler, 12" Aluminum Architect Scale, Triangular Ruler for Blueprint, Triangle Drafting Metal Architecture - Architectural Scale Ruler, Imperial Measurements 12'', Laser-Etched Aluminum Architect Triangular Ruler Black for Architects, Students, Draftsman, and Engineers by mveohos --- ## 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.in/products/216984001-mr-pen-triangle-ruler-protractor-math-set-3-pack-square](https://www.desertcart.in/products/216984001-mr-pen-triangle-ruler-protractor-math-set-3-pack-square) --- *Product available on Desertcart India* *Store origin: IN* *Last updated: 2026-05-05*