Helix Oxford Set Square 45° 31cm 12"

SG Education Own Brand Clear Set Square 60° 25cm. Quality Product at an unbeatable value price.

Also available in larger size.
0 starts in a bit from the edge, NOT on the corner.

SG Education Own Brand Clear Set Square 60° 32cm large Also available in 26cm Quality product at great value price 0 starts in from the edge, not at the corner

SG Education Own Brand 60 degree Set Square,

Quality Extra Strong at a great value price,

60° 25 cm.

Orange transparent in colour.

Also available in other sizes.

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