---
product_id: 724685962
title: "Professional 30cm 12\" Metric Triangular Aluminum Scale Engineering Ruler 1:20, 1:25, 1:50 1:75 , 1:100, 1:125"
brand: "ocm brand"
price: "₨991"
currency: SCR
in_stock: true
reviews_count: 5
category: "Ocm Brand"
url: https://www.desertcart.sc/products/724685962-professional-30cm-12-metric-triangular-aluminum-scale-engineering-ruler-1
store_origin: SC
region: Seychelles
---

# 6 precision scales cast aluminum durability triangular safe cutting edge Professional 30cm 12" Metric Triangular Aluminum Scale Engineering Ruler 1:20, 1:25, 1:50 1:75 , 1:100, 1:125

**Brand:** ocm brand
**Price:** ₨991
**Availability:** ✅ In Stock

## Summary

> 📐 Elevate your craft with precision that professionals trust!

## Quick Answers

- **What is this?** Professional 30cm 12" Metric Triangular Aluminum Scale Engineering Ruler 1:20, 1:25, 1:50 1:75 , 1:100, 1:125 by ocm brand
- **How much does it cost?** ₨991 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/724685962-professional-30cm-12-metric-triangular-aluminum-scale-engineering-ruler-1)

## Best For

- ocm brand enthusiasts

## Why This Product

- Trusted ocm brand brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Cutting Edge Safety:** Triangular profile ensures safer, more stable cutting and scoring.
- • **Risk-Free Confidence:** 100% money-back guarantee—because your satisfaction is non-negotiable.
- • **Six Scales, One Tool:** Master every project with 1:20 to 1:125 precision scales on three sides.
- • **Smudge-Free Precision:** Concave base design prevents smearing for flawless, clean lines every time.
- • **Engineered for Endurance:** Robust cast aluminum body built to withstand daily professional use.

## Overview

The OCM Professional 12" Triangular Aluminum Scale Ruler combines six metric scales (1:20 to 1:125) in a durable cast aluminum triangular body designed for architects, engineers, and technical professionals. Its concave base minimizes smearing, while the sturdy construction ensures safe cutting and long-lasting use. Backed by a 100% money-back guarantee, this ruler is a reliable tool for precision measurement and drafting.

## Description

Great prices on your favourite Office brands plus free delivery and returns on eligible orders.

Review: Works perfectly
Review: Well made. I don't use it for it's proper use. I use it to trim off the batting from my quilting blocks.

## Features

- CAST ALUMINUM 12 Inch Engineer scale ruler with triangular body for safer cutting and scoring of materials.
- Scales 1:20, 1:25, 1:50, 1:75, 1:100, 1:125. For professional applications, architecture, engineering, and technical drawing.
- Clearly marked metric graduations, Easy-to-read printed graduations.
- Three sides with six different scales, Concave base reduces smearing when drawing.
- 100% MONEY BACK GARANTEE - We at OCM are Confident That You Will Be Happy With Our Triangular Ruler, However if it does not meet your satisfaction - We will Honor a Full Refund, No Questions Asked

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01MQSQJCJ |
| Brand | OCM Brand |
| Colour | Chrome |
| Customer Reviews | 4.7 4.7 out of 5 stars (258) |
| Date First Available | 4 Dec. 2016 |
| Item Weight | 90.6 g |
| Manufacturer | OCM |
| Manufacturer Part Number | R12M |
| Material Type | Aluminium |
| Model Number | OP-33808 |
| Product Dimensions | 31.75 x 2.54 x 0.1 cm; 90.72 g |

## Product Details

- **Brand:** OCM Brand
- **Colour:** Chrome
- **Graduation range:** 30 Centimetres
- **Material:** Aluminium
- **Style:** Triangular

## Images

![Professional 30cm 12" Metric Triangular Aluminum Scale Engineering Ruler 1:20, 1:25, 1:50 1:75 , 1:100, 1:125 - Image 1](https://m.media-amazon.com/images/I/51jmv7g9QCL.jpg)
![Professional 30cm 12" Metric Triangular Aluminum Scale Engineering Ruler 1:20, 1:25, 1:50 1:75 , 1:100, 1:125 - Image 2](https://m.media-amazon.com/images/I/61LbVAwnMUL.jpg)
![Professional 30cm 12" Metric Triangular Aluminum Scale Engineering Ruler 1:20, 1:25, 1:50 1:75 , 1:100, 1:125 - Image 3](https://m.media-amazon.com/images/I/61yLzQN6wnL.jpg)
![Professional 30cm 12" Metric Triangular Aluminum Scale Engineering Ruler 1:20, 1:25, 1:50 1:75 , 1:100, 1:125 - Image 4](https://m.media-amazon.com/images/I/71bn5Aq4XqL.jpg)
![Professional 30cm 12" Metric Triangular Aluminum Scale Engineering Ruler 1:20, 1:25, 1:50 1:75 , 1:100, 1:125 - Image 5](https://m.media-amazon.com/images/I/71nzr+ftQQL.jpg)

## Questions & Answers

**Q: Why is your 1:125 scale so far off? No QA department?**
A: You sure you are working in METRIC?

**Q: This is cm or inch?**
A: Cm/mm

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by K***O on 21 August 2023*

Works perfectly

### ⭐⭐⭐⭐⭐ Review
*by M***E on 7 August 2025*

Well made. I don't use it for it's proper use. I use it to trim off the batting from my quilting blocks.

### ⭐⭐⭐ Review
*by H***A on 6 January 2023*

Es muy bueno, aguanta bastante bien los golpes pero se le borran los números y las lineas muy fácilmente

## Frequently Bought Together

- OCM Metric Triangular Engineer Scale Ruler (Proffessional Grade Solid Aluminum) 30 Centimeters Metric Engineering Architectural Mechanical Drafting Ruler - 1:20, 1:25, 1:50 1:75, 1:100, 1:125
- Architectural Scale Ruler, Imperial Measurements 12'', Laser-Etched Aluminum Architect Triangular Ruler Black for Architects, Students, Draftsman, and Engineers by mveohos
- Intoy 12 Inch Triangular Engineer Scale Ruler, Anodized Solid Aluminum Core with Laser Etched Scales, Imperial Scale - 1:10, 1:20, 1:30, 1:40, 1:50, 1:60, Ideal for Civil Engineering Drafting

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-03-19*