Rumold Replacement Drawing Rail for Board

Helix Early Learning Rulers are designed for young learners, measuring 30cm in length, 3.4mm in thickness, and 2.7cm in width. The rulers feature easy-to-read coloured blocks: alternating yellow and white for each 1cm segment, and yellow and green for every 10cm section, making measurement simple and engaging.

A 30 cm ruler made from clear transparent polystyrene.

The SG Architects Scale Ruler 30cm is a precision tool designed for architects, designers, and engineers. Featuring multiple scale measurements, this ruler ensures accurate drafting and scaling for technical drawings and blueprints. Made from durable materials, it provides clear, easy-to-read markings for professional use. Its 30cm length makes it ideal for both detailed work and larger projects, ensuring precision and efficiency in every design.

Ruler Quality shatterproof plastic ruler 30cm made in Germany branded with SG Education logo

Flexible, durable and ideal for everyday classroom use.

Assorted Colours.

30cm

The ruler is raised by the midbump to prevent the residual ink or lead from leaving a secondary mark on the page. It is typically used with either a mechanical or clutch pencil, the lead is extended longer then it would be from regular drawing or construction. The pencil is held straight so it is perpendicular to the paper and creates a right angle with the ruler. (Note the lead should be touching the ruler, not the pencil itself.)

12" (300mm) Dividings: 1:1, 1:100x1:20, 1:200, 1:5, 1:50x1:1250, 1:2500

Elastika unbreakable 30cm ruler. Green in colour.

cm, mm and scale
Scales featured: 1:1, 1:20, 1:5, 1:1250, 1:100, 1:200, 1:50, 1:2500

Helix Engineers scale ruler 30cm