Precision. Durability. Efficiency. Whether you’re an architect, engineer, designer or student, the Triangular Scale Rule 300mm is a must-have tool in your kit. Designed with usability and accuracy in mind, this 3-sided ruler features six of the most commonly used metric scales: 1:20, 1:25, 1:50, 1:75, 1:100 and 1:125 .

Made from tough, long-lasting plastic , this scale rule won’t rust or lose shape over time – making it perfect for both the classroom and the job site. Each side is colour-coded with red, green or yellow grooves , allowing you to instantly locate the right scale for your drawing without confusion or delay.

The triangular shape not only offers multiple scale options but also provides a comfortable grip and excellent control while drawing. The precise and clearly printed graduations ensure that your work remains clean, accurate and professional.

To keep your scale rule in top condition, it comes supplied in a durable plastic storage case – ideal for sliding into a toolkit, pencil case or drawer without worrying about damage.

We aim to get your order to you as fast as possible! Once you have paid for your order you will receive a confirmation email showing the order’s status.

If you have paid via cheque or Paypal eCheque (similar to traditional paper cheques) your order will show as Queued until your cheque has cleared. If you paid using a Paypal instant payment or via our card processing gateway and your card payment was authorised then your order will show as Processed. Orders placed before 2pm, Monday to Friday are shipped on the same day. Orders placed over a weekend will be shipped the next working day.

• Standard Shipping method normally takes 3-4 working days to a UK address.
• We do not currently offer a weekend delivery service. Orders placed before the 2pm cut-off time on a Friday will be delivered the next working day.
• Next Day Courier method is a next working day service that is available to orders placed before 2pm on a working day. Deliveries can be up to 7pm for residential addresses and 5pm to business addresses.

For more information, please visit our deliveries page.

Interested in bulk ordering?

For an exclusive bespoke price, please call us on: 02380 669628.