Visit Our Shop Add To Saved Sellers Join Our Newsletter Contact Us Helix 12" Inch / 30cm Clear Ruler Item Description Helix 12" Inch / 30cm Clear Ruler - Premium Quality Helix Ruler - Clear design - 12" Inch / 30cm measurements - Shatter restistant plastic - Perfect for school or exam use - A must have for any pencil case or stationery set! - Manufactured by Helix These Premium Quality Helix Clear Rulers are perfect for measuring in either Inch or CM with their 12" or 30cm length. These are a must have for any pencil case or stationery set. Available in quantities of 1, 2, 3, 5, 10, 20, 30, or 50 Rulers from the drop down menu above. The more you buy the more you save. Take advantage of our low prices today! About Us Welcome .