The Centreline Rule 150mm is designed with zero placed at the centre of the rule and the dimensions going outwards to both sides. This allows for easy symmetrical drawing or calligraphy work. The rule is 10mm wide to each end with corresponding millimetre markings for creating parallel lines. The back of the long edge of the rule has a bevel to minimise ink smudging. The centre of the rule there is a small tab with a bevel to make lifting the rule without disturbing the surrounding work simple. The Centreline Rule 210mm is designed to complement an A5 page or notebook. Part of the Original Collection. A warm and tactile set of products made in the UK from European recyclable and carbon neutral MDF that gives a beautiful textured look to the surface. The markings are all etched in to ensure they cannot be worn away over time and the back face is painted black to allow the pieces to move around smoothly on notepads and drawing paper. 150 x 15 x 3mm