---
product_id: 105534669
title: "30cm Black (c) Metal Triangular Scale Ruler 1:1 1:10 1:2 1:20/1:5 1:50 1:100 1:200/1:500 1:1000 1:1250 1:2500"
brand: "rulex"
price: "A$45"
currency: AUD
in_stock: true
reviews_count: 13
category: "Rulex"
url: https://www.desertcart.com.au/products/105534669-30cm-black-c-metal-triangular-scale-ruler-1-1-1
store_origin: AU
region: Australia
---

# 12 precision metric scales Aluminium metal build Red & white laser-etched furrows 30cm Black (c) Metal Triangular Scale Ruler 1:1 1:10 1:2 1:20/1:5 1:50 1:100 1:200/1:500 1:1000 1:1250 1:2500

**Brand:** rulex
**Price:** A$45
**Availability:** ✅ In Stock

## Summary

> 📐 Own the scale of precision — design like a pro, measure like a boss!

## Quick Answers

- **What is this?** 30cm Black (c) Metal Triangular Scale Ruler 1:1 1:10 1:2 1:20/1:5 1:50 1:100 1:200/1:500 1:1000 1:1250 1:2500 by rulex
- **How much does it cost?** A$45 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/105534669-30cm-black-c-metal-triangular-scale-ruler-1-1-1)

## Best For

- rulex enthusiasts

## Why This Product

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

## Key Features

- • **Ready for the Field:** Comes in a reusable rigid plastic case—perfect for architects and designers on the move.
- • **All-in-One Precision:** 12 laser-etched metric scales from 1:1 to 1:2500 cover every architectural and engineering need.
- • **Pro-Grade Visibility:** Red and white furrows provide sharp contrast for quick, error-free reading under any lighting.
- • **Durable Metal Craftsmanship:** Premium black anodised aluminium resists bending, chipping, and glare for long-lasting use.
- • **Ergonomic Triangular Design:** Stable, non-roll shape ensures effortless grip and precise measurements on any surface.

## Overview

The Rulex 30cm Black Metal Triangular Scale Ruler is a professional-grade aluminium tool featuring 12 laser-etched metric scales ranging from 1:1 to 1:2500. Its durable black anodised finish minimizes glare, while the ergonomic triangular shape prevents rolling and enhances grip. Designed for architects, engineers, and designers, it comes housed in a reusable rigid plastic case, making it a reliable companion for precise scaled drawings and layouts both in the studio and on-site.

## Description

Rulex 30cm black (c) metal metric triangular scale ruler. 12 different scales: Side 1: 1:5 1:50 1:100 1:200 Side 2: 1:1 1:10 1:2 1:20 Side 3: 1:500 1:1000 1:1250 1:2500 Professional quality for architects, engineers, designers and construction workers. One scale ruler is supplied in a transparent rigid reusable plastic case

Review: Solid, sharp, and no-nonsense—ideal for scaled drawings, layout tweaks, or gear design. - Picked this up for sketching merch layouts and checking site plans—feels premium straight out the box. Black anodised metal finish looks slick and doesn’t glare under work lights. Triangular shape’s easy to grip and doesn’t roll off the desk or dashboard. Ratios are laser-etched and crisp: 1:1, 1:2, 1:5, 1:10, 1:20, 1:50, 1:100—plus the extended ones like 1:200, 1:500, 1:1000, 1:1250, 1:2500. Covers everything from quick sketches to proper scaled layouts. No flex, no fade, and it’s tough enough to survive the van. 👍 Pros ✅ Durable metal—won’t bend or chip ✅ Matte black—low glare, clean look ✅ Full scale range—covers most drawing needs ✅ Triangular shape—stable and easy to handle ✅ Laser-etched markings—won’t rub off 👎 Cons ❌ No pouch—worth grabbing one if you’re mobile ❌ Slightly weighty—solid feel, but not featherlight ❌ Edges are sharp—watch your fingers if you’re rushing
Review: Perfect for ROD’s. - These are brilliant for technical drawings. They have six different scales and it’s beautifully detailed. I liked this 300mm ruler so much I bought the 150mm version too.

## Features

- 300mm aluminium black triangular scale ruler with metric A architectural scales, the most common scales used in the UK for architects and design students.
- 12 different metric scales. Image shows each side of the ruler (one supplied)
- Scales 1:1, 1:10, 1:2, 1:20, 1:5, 1:50, 1:100, 1:200,1:500, 1:1000, 1:1250, 1:2500.
- One scale ruler is supplied in a re-useable rigid plastic case
- Features red and white coloured furrows
- Manufactured in Europe for accuracy and durability

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07N7J7M79 |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 46,724 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 17 in Triangular Scales |
| Colour | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (240) |
| Date First Available | 23 Feb. 2016 |
| Item Package Quantity | 1 |
| Item Weight | 131 g |
| Manufacturer | Rulex |
| Manufacturer reference | 0821.36 |
| Material | Aluminium |
| Part number | 0821.36 |
| Product Dimensions | 34 x 3 x 3 cm; 131 g |
| Style | Triangular |

## Product Details

- **Brand:** Rulex
- **Colour:** Black
- **Material:** Aluminium
- **Product dimensions:** 34L x 3W centimetres
- **Style:** Triangular

## Images

![30cm Black (c) Metal Triangular Scale Ruler 1:1 1:10 1:2 1:20/1:5 1:50 1:100 1:200/1:500 1:1000 1:1250 1:2500 - Image 1](https://m.media-amazon.com/images/I/61inFPI1jQL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Solid, sharp, and no-nonsense—ideal for scaled drawings, layout tweaks, or gear design.
*by G***E on 20 September 2025*

Picked this up for sketching merch layouts and checking site plans—feels premium straight out the box. Black anodised metal finish looks slick and doesn’t glare under work lights. Triangular shape’s easy to grip and doesn’t roll off the desk or dashboard. Ratios are laser-etched and crisp: 1:1, 1:2, 1:5, 1:10, 1:20, 1:50, 1:100—plus the extended ones like 1:200, 1:500, 1:1000, 1:1250, 1:2500. Covers everything from quick sketches to proper scaled layouts. No flex, no fade, and it’s tough enough to survive the van. 👍 Pros ✅ Durable metal—won’t bend or chip ✅ Matte black—low glare, clean look ✅ Full scale range—covers most drawing needs ✅ Triangular shape—stable and easy to handle ✅ Laser-etched markings—won’t rub off 👎 Cons ❌ No pouch—worth grabbing one if you’re mobile ❌ Slightly weighty—solid feel, but not featherlight ❌ Edges are sharp—watch your fingers if you’re rushing

### ⭐⭐⭐⭐⭐ Perfect for ROD’s.
*by T***R on 11 January 2025*

These are brilliant for technical drawings. They have six different scales and it’s beautifully detailed. I liked this 300mm ruler so much I bought the 150mm version too.

### ⭐⭐⭐⭐⭐ Good scale rule.
*by B***T on 15 October 2025*

Good solid scale rule. All the various scales I need. I also like the protective plastic container.

## Frequently Bought Together

- Rulex 30cm Black (c) Metal Triangular Scale Ruler 1:1 1:10 1:2 1:20/1:5 1:50 1:100 1:200/1:500 1:1000 1:1250 1:2500
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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-14*