01 4503452
Item number: AR23509
The College Geometry Set consists of the 30 cm ruler 23030, the isosceles 45 ° triangle 23420, the unequal 60 ° triangle 23620 and the semicircle protractor 23301. All parts are made of polystyrene and have ink edges and facets to smear the lines to prevent. The millimeter - division of 145 mm of the 45 ° - and of 205 mm of the 60 ° triangle is always printed on the longer cathetus, with the 0 point on the edge of the 90 ° angle. The semicircular protractor with a counter-rotating angle scale of 180 ° has a facet for precise line guidance and a bar with a 100 mm long millimeter scale.
