The Circle Tool and Rule 5-200 is a super clever combination circle drawing tool and ruler. Able to draw circles from 5mm to 200mm in diameter at 5mm increments. The centre point has a small brass pin with horizontal and vertical guide lines for easy locating in place. To use, line up the pin where you'd like your circle. Place your finger over the brass pin, then use a mechanical pencil to select your preferred diameter, popping the pencil into the correct hole. The two sides have 100mm rules with incremental millimetre marks to both long edges, allowing for the rule to be used to measure from the left or right. The back of the long edge of the rule has a bevel to minimise ink smudging. * Draw circles from 5mm to 200mm diameter * Fits neatly in a pencil case * Designed and made in the UK * 120 x 30 x 3mm