Helix 31cm / 60° Set Square Umbrellas Acroball is equipped with an

Acroball is equipped with an ergonomic grip so that it can be held well in the hand and a tungsten carbide nib which cannot be deformed and will not wear out

Permanent on most hard-to-mark surfaces such as glass

This inverted umbrella will keep you dry when going in or out of your car and will prevent water from dripping onto surfaces

2 or more lowercase letters: a-z

Set contains 15cm ruler

Helix 31cm / 60° Set Square Umbrellas Acroball is equipped with anL84X10 This Helix set square is 31cm 60 degrees with engraved graduations, perfect for or students and school pupils studying mathematics, design and technology, geometry, and other mathematical related subjects.