Martha Stewart Crafts - Mini Score Board. Score flawless crisp lines in seconds! Perfect for card makers, it will accommodate papers up to 8 inches wide with scoring grooves spaced at 1/8 inch increments. An easy-to-use guide is printed on the back surface with standard card sizes and grooves for creating matching sized envelopes. It is made of durable melamine and includes a bone folder that clips onto the surface for compact storage. Overall measurements of the board are 9-3/4x7-1/2 inches. Each package contains one scoring board and one bone folder.