Set of 7502S geometric blue formulas KOH-I-NOOR

The large geometric set with formulas consists of the following products: triangle 45/177 with a vertical, triangle 60/250, ruler 30 cm and protractor 180/100.

All products are made of blue transparent polystyrene.

The scales are made by hot stamping or precision screen printing, which is wear-resistant in normal use.

Length scale accuracy 0.2% of length. The set is suitable for technical drawing, drawing and measuring lines, lines, parallels, perpendiculars, angles, etc. at school and in the office.

Compared to the standard, a small multiplier is additionally printed on the 30 cm ruler, unit conversions on the 45/177 triangle and a formula for calculations of circumference, area, surface and volume on the triangle 60/250. The products are packed in an all-transparent polypropylene case with a paper insert and a Euro-hinge.