Ruler Combo Set Mixed 4PCS

Set of rulers, made of durable transparent plastic material, in different colors.
The set contains a straight ruler of 30 cm, with measurement system in cm and inches,
a right triangular ruler, 24 cm length, an isosceles triangular ruler, with 17 cm length,
and a protractor, 9 cm in diameter.
It is used by children, in schools,
to make various measurements and it is suitable for use by children over 3 years old.