Visit Our Shop Add To Saved Sellers Join Our Newsletter Contact Us Helix 180° Clear Protractors Item Description Helix 180° Clear Protractors - Crystal Clear/Transparent - 100mm/10cm in diameter - Reversible 180° in scale - Bold black text - High Quality, lightweight, durable plastic material - Perfect for school, exam or office use - A must have for any stationery set or pencil case! - Manufactured by Helix These high quality Helix 180° Clear Protractors are perfect for school or exam use, with their reversible 180° scale and crystal clear colour they provide complete accuracy of measurement - A must have for any pencil case or stationery set! Available in quantities of 1, 2, 5, 10 or 20 Protractors from the drop down menu above. Take advantage.